25 - 2 EMISSIONS CONTROL EMISSIONS CONTROL (Continued) DESCRIPTION - DIAGNOSTIC TROUBLE CODES
A Diagnostic Trouble Code (DTC) indicates the PCM has recognized an abnormal condition in the system.
Remember that DTC's are the results of a Sys
tem or circuit failure, but do not directly identify the failed
component or components.
NOTE: For a Iist of DTC's, refer to the charts in this section.
BULB CHECK
Each time the ignition key is turned to the ON position, the malfunction indicator (check engine) lamp on the instrument panel should illuminate for approximately 2 seconds then go out. This is done for a bulb check.
OBTAINING DTC'S USING DRB SCAN TOOL
- Connect the DRB scan tool to the data link (diagnostic) connector. This connector is located in the passenger compartment; at the lower edge of instrument panel; near the steering column.
- Turn the ignition switch on and access the "Read Fault" screen.
- Record all the DTC's and "freeze frame" Information shown on the DRB scan tool.
- To erase DTC's, use the "Erase Trouble Code" data screen on the DRB scan tool. Do not erase any DTC's until problems have been investigated and repairs have been performed.
25 - 3 EMISSIONS CONTROL (Continued) BR/BE EMISSIONS CONTROL
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation
if this DTC was recorded |
||
(G) Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB Scan Tool Display
|
Brief Description
of DTC |
P0123
(M) |
Accelerator
Position Sensor (APPS) Signal Voltage Too High |
APPS
voltage input above the maximum acceptable voltage. |
P0125
(M) |
Closed
Loop Temp Not Reached |
Time
to enter Closed Loop Operation (Fuel Control) is excessive. |
P0125
(M) |
Engine
is Cold Too Long |
Engine
does not reach operating temperature. |
P0130
(M) |
1/1
02 Sensor Heater Circuit Malfunction |
Oxygen
sensor heater element malfunction. |
P0131
(M) |
1/1
02 Sensor Shorted To Ground |
Oxygen
sensor input voltage maintained below normal operating range. |
P0132
(M) |
1/1
02 Sensor Shorted To Voltage |
Oxygen
sensor input voltage maintained above normal operating range. |
P0133
(M) |
1/1
02 Sensor Slow Response |
Oxygen
sensor response slower than minimum required switching frequency.
|
P0134
(M) |
1/1
02 Sensor Stays at Center |
Neither
rich or lean condition is detected from the oxygen sensor input.
|
P0135
(M) |
1/1
02 Sensor Heater Failure |
Oxygen
sensor heater element malfunction. |
P0136
(M) |
1/2
02 Sensor Heater Circuit Malfunction |
Oxygen
sensor heater element malfunction. |
P0137
(M) |
1/2
02 Sensor Shorted To Ground |
Oxygen
sensor input voltage maintained below normal operating range. |
P0138
(M) |
1/2
02 Sensor Shorted To Voltage |
Oxygen
sensor input voltage maintained above normal operating range. |
P0139
(M) |
1/2
02 Sensor Slow Response |
Oxygen
sensor response not as expected. |
P0140
(M) |
1/2
02 Sensor Stays at Center |
Neither
rich or lean condition is detected from the oxygen sensor. |
P0141
(M) |
1/2
02 Sensor Heater Failure |
Oxygen
sensor heater element malfunction. |
P0143
(M) |
1/3
02 Sensor Shorted To Ground |
Oxygen
sensor input voltage maintained below normal operating range. |
P0144
(M) |
1/3
02 Sensor Shorted To Voltage |
Oxygen
sensor input voltage maintained above normal operating range. |
P0145
(M) |
1/3
02 Sensor Slow Response |
Oxygen
sensor response slower than minimum required switching frequency.
|
P0146
(M) |
1/3
02 Sensor Stays at Center |
Neither
rich or lean condition is detected from the oxygen sensor. |
P0147
(M) |
1/3
02 Sensor Heater Failure |
Oxygen
sensor heater element malfunction. |
P0151
(M) |
2/1
02 Sensor Shorted To Ground |
Oxygen
sensor input voltage maintained below normal operating range. |
P0152
(M) |
2/1
02 Sensor Shorted To Voltage |
Oxygen
sensor input voltage sustained above normal operating range. |
P0153
(M) |
2/1
02 Sensor Slow Response |
Oxygen
sensor response slower than minimum required switching frequency.
|
P0154
(M) |
2/1
02 Sensor Stays at Center |
Neither
rich or lean condition is detected from the oxygen sensor. |
25 - 4 EMISSIONS CONTROL BRIBE EMISSIONS CONTROL (Continued)
(M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was
recorded |
||
(G)
Generator lamp illuminated |
||
Generic
Scan |
DRB Scan Tool Display |
Brief Description of DTC |
| P0155 (M) | 2/1 02 Sensor Heater Failure | Oxygen sensor heater element malfunction. |
| P0157 (M) | 2/2 02 Sensor Shorted To Ground | Oxygen sensor input
voltage maintained below normal operating range. |
| P0158 (M) | 2/2 02 Sensor Shorted To Voltage | Oxygen sensor input
voltage maintained above normal operating range. |
| P0159 | 2/2 02 Sensor Slow Response | Oxygen sensor response siower than minimum required switching frequency. |
| P0160 (M) | 2/2 02 Sensor Stays at Center | Neither rich or lean condition is detected from the oxygen sensor. |
| P0161 (M) | 2/2 02 Sensor Heater Failure | Oxygen sensor heater element malfunction. |
| P0168 | Decreased Engine Performance
Due To High Injection Pump Fuel Temp |
Fuel temperature is
above the engine protection limit. Engine power will be derated. |
| P0171 (M) | 1/1 Fuel System Lean | A lean air/fuel mixture
has been indicated by an abnormally rich correction factor. |
| P0172 (M) | 1/1 Fuel System Rich | A rich air/fuel mixture
has been indicated by an abnormally lean correction factor. |
| P0174 (M) | 2/1 Fuel System Lean | A lean air/fuel mixture
has been indicated by an abnormally rich correction factor. |
| P0175 (M) | 2/1 Fuel System Rich | A rich air/fuel mixture
has been indicated by an abnormally lean correction factor. |
| P0176 | Loss of Flex Fuel Calibration Signal | No calibration voltage present from flex fuel sensor. |
| P0177 | Water In Fuel | Excess water found in fuel by water-in-fuel sensor. |
| P0178 | Flex Fuel Sensor Volts Too Low | Flex tuet sensor input below minimum acceptable voltage. |
| P0178 | Water In Fuel Sensor Voltage Too Low | Loss of water-in-fuel circuit or sensor. |
| P0179 | Flex Fuel Sensor Volts Too High | Flex fuel sensor input
above maximum acceptable voltage. |
| P0181 | Fuel Injection Pump Failure | Low power, engine derated, or engine stops. |
| P0182 (M) | CNG Temp Sensor Voltage Too Low | Compressed natural gas
temperature sensor voltage below acceptable voltage. |
| P0183 (M) | CNG Temp Sensor Voltage Too High | Compressed natural gas
temperature sensor voltage above acceptable voltage. |
| P0201 (M) | Injector #1 Control Circuit | An open or shorted condition detected in control circuit for injector #1 or the INJ 1 injector bank. |
| P0202 (M) | Injector #2 Control Circuit | An open or shorted condition detected in control circuit for injector #2 or the INJ 2 injector bank. |
| P0203 (M) | Injector #3 Control Circuit | An open or shorted condition detected in control circuit for injector #3 or the INJ 3 injector bank. |
| P0204 (M) | Injector #4 Control Circuit | Injector #4 or INJ 4 injector bank output driver stage does not respond properly to the control Signal. |
| P0205 (M) | Injector #5 Control Circuit | Injector #5 output driver stage does not respond properly to the control Signal. |
25 - 5 EMISSIONS CONTROL (Continued) BR/BE
EMISSIONS CONTROL
(M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was
recorded |
||
(G)
Generator lamp illuminated |
||
Generic
Scan |
DRB Scan Tool Display |
Brief Description of DTC |
| P0206 (M) | Injector #6 Control Circuit | Injector #6 output driver stage does not respond properlyto the control signal. |
| P0207 (M) | Injector #7 Control Circuit | Injector #7 output driver stage does not respond properly to the control signal. |
| P0208 (M) | Injector #8 Control Circuit | Injector #8 output driver stage does not respond properly to the control signal. |
| P0209 (M) | Injector #9 Control Circuit | Injector #9 output driver stage does not respond properly to the control signal. |
| P0210 (M) | Injector #10 Control Circuit | Injector #10 output driver stage does not respond properly to the control signal. |
| P0215 | Fuel Injection Pump Control Circuit | Failure in fuel pump relay control circuit. |
| P0216 (M) | Fuel Injection Pump Timing Failure | High fuel supply restriction, low fuel pressure or possible wrong or incorrectly installed pump keyway. |
| P0217 | Decreased Engine Performance
Due To Engine Overheat Condition |
Engine overheating. ECM will derate engine performance. |
| P0219 | Crankshaft Position
Sensor Overspeed Signal |
Engine has exceeded rpm limits. |
| P0222 (M) | Idle Validation Signals Both Low | Problem detected with idle validation circuits within APPS. |
| P0223 (M) | Idle Validation Signals
Both High (Above 5 Volts) |
Problem detected with idle validation circuits within APPS. |
| P0230 | Transfer Pump (Lift
Pump) Circuit Out of Range |
Problem detected in fuel transfer pump circuits. |
| P0232 | Fuel Shutoff Signal Voltage Too High | Fuel shut-off signal
voltage too high from ECM to fuel injection pump. |
| P0234 (M) | Turbo Boost Limit Exceeded | Problem detected in turbocharger wastegate. |
| P0236 (M) | Map Sensor Too High Too Long | Problem detected in turbocharger wastegate. |
| P0237 (M) | Map Sensor Voltage Too Low | MAP sensor voltage input below the minimum acceptable voltage. |
| P0238 (M) | Map Sensor Voltage Too High | MAP sensor voltage input
above the maximum acceptable voltage. |
| P0251 (M) | Fuel Inj. Pump Mech.
Failure Fuel Valve Feedback Circuit |
Problem sensed with fuel circuit internal to fuel injection pump. |
| P0253 (M) | Fuel Injection Pump
Fuel Valve Open Circuit |
Problem sensed with fuel circuit internal to fuel injection pump. |
| P0254 | Fuel Injection Pump
Fuel Valve Current Too High |
Problem caused by internal fuel injection pump failure. |
| P0300 (M) | Multiple Cylinder Mis-fire | Misfire detected in multiple cylinders. |
| P0301 (M) | CYLINDER #1 MISFIRE | Misfire detected in cylinder #1. |
| P0302 (M) | CYLINDER #2 MISFIRE | Misfire detected in cylinder #2. |
| P0303 (M) | CYLINDER #3 MISFIRE | Misfire detected in cylinder #3. |
| P0304 (M) | CYLINDER #4 MISFIRE | Misfire detected in cylinder #4. |
| P0305 (M) | CYLINDER #5 MISFIRE | Misfire detected in cylinder #5. |
25 - 6 EMISSIONS CONTROL
NS CONTROL (Continued)
| (M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
| (G)
Generator lamp illuminated |
||
| Generic Scan Tool P-Code |
DRB Scan Tool Display | Brief Description of DTC |
| P0306 (M) | CYLINDER #6 MISFIRE | Misfire detected in cylinder #6. |
| P0307 (M) | CYLINDER #7 MISFIRE | Misfire detected in cylinder #7 |
| P0308 (M) | CYLINDER #8 MISFIRE | Misfire detected in cylinder #8. |
| P0309 (M) | CYLINDER #9 MISFIRE | Misfire detected in cylinder #9. |
| P0310 (M) | CYLINDER #10 MISFIRE | Misfire detected in cylinder #10. |
| P0320 (M) | No Crank Referance Signal at PCM | Na reference signal (crankshaft position sensor) detected during engine cranking. |
| P0320 (M) | Na RPM Signal to PCM
(Crankshaft Position Sensor Signal to JTEC) |
A CKP Signal has not been detected at the PCM. |
| P0325 | Knock Sensor #1 Circuit | Knock sensor (#1) signal
above or below minimum acceptable threshold voltage at particular engine speeds. |
| P0330 | Knock Sensor #2 Circuit | Knock sensor (#2) signal
above or below minimum acceptable threshold voltage at particular engin speeds. |
| P0336 (M) | Crankshaft Position
(CKP) Sensor Signal |
Problem with voltage signal from CKP. |
| P0340 (M) | No Cam Signal At PCM | Na fuel sync |
| P0341 (M) | Camshaft Position (CMP) Sensor Signal | Problem with voltage signal from CMP. |
| P0350 | Ignition Coil Draws Too Much Current | A coil (1-5) is drawing too much current. |
| P0351 (M) | Ignition Coil # 1 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time. |
| P0352 (M) | Ignition Coil # 2 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time. |
| P0353 (M) | Ignition Coil # 3 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time. |
| P0354 (M) | Ignition Coil # 4 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time (High Impedance). |
| P0355 (M) | Ignition Coil # 5 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time (High Impedance). |
| P0356 (M) | Ignition Coil # 6 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time (high impedance). |
| P0357 (M) | Ignition Coil # 7 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time (high impedance). |
| P0358 (M) | Ignition Coil # 8 Primary Circuit | Peak primary circuit current not achieved with maximum dwell time (high impedance). |
| P0370 | Fuel Injection Pump Speed/Position Sensor Sig Lost | Problem caused by internal fuel injection pump failure. |
| P0380 (M) | Intake Air Heater Relay #1 Control Circuit | Problem detected in #1 air heater solenoid/relay circuit (not heater element) |
| P0381 (M) | Wait To Start Lamp Inoperative | Problem detected in wait-to-start bulb circuit. |
| P0382 (M) | Intake Air Heater Relay #2 Control Circuit | Problem detected in #2 air heater solenoid/relay circuit (not heater element) |
25 - 7 EMISSIONS
CONTROL (Continued) BR/BE EMISSIONS CONTROL
| (M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as
an engine icon an instrument panel. |
||
(G)
Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB
Scan Tool Display |
Brief
Description of DTC |
P0387
|
Crankshaft
Position Sensor Supply Voltage Too Low |
CKP
sensor voltage input below the minimum acceptable voltage. |
P0388
|
Crankshaft
Position Sensor Supply Voltage Too High |
CKP
sensor voltage input above the maximum acceptable voltage. |
PO401
|
EGR
System Failure |
Required
change in air/fuel ration not detected during diagnostic test.
|
PO403
|
EGR
Solenoid Circuit |
An
open or shorted condition detected in the EGR solenoid control
circuit. |
PO404
|
EGR
Position Sensor Rationality |
EGR
position sensor signal does not correlate to EGR duty cycle. |
PO405
|
EGR
Position Sensor Volts Too Low |
EGR
position sensor Input below the acceptable voltage range. |
PO406
|
EGR
Position Sensor Volts Too High |
EGR
position sensor input above the acceptable voltage range. |
PO412
|
Secondary
Air Solenoid Circuit |
An
open or shorted condition detected in the secondary air (air switching/aspirator)
solenoid control circuit. |
PO420
(M) |
1/1
Catalytic Converter Efficiency |
Catalyst
1/1 efficiency below required level. |
PO432
(M) |
1/2
Catalytic Converter Efficiency |
Catalyst
2/1 efficiency below required level. |
PO441
(M) |
Evap
Purge Flow Monitor |
Insufficient
or excessive vapor flow detected during evaporative emission system
operation. |
PO442
(M) |
Evap
Leak Monitor Medium Leak Detected |
A small
leak has been detected in the evaporative system. |
PO443
(M) |
Evap
Purge Solenoid Circuit |
An
open or shorted condition detected in the EVAP purge solenoid
control circuit. |
PO455
(M) |
Evap
Leak Monitor Large Leak Detected |
A (arge
leak has been detected in the evaporative System. |
PO456
(M) |
Evap
Leak Monitor Small Leak Detected |
Leak
has been detected in the evaporative system. |
PO460
|
Fuel
Level Unit No Change Over Miles |
During
Iow fuel |
PO460
|
Fuel
Level Unit No Change Over Miles |
Fuel
level sending unit voltage does not change for more than 40 miles.
|
PO462
|
Fuel
Level Sending Unit Volts Too Low |
Fuel
level sensor input below acceptable voltage. |
PO462
(M) |
Fuel
Level Sending Unit Volts Too Low |
Open
circuit between PCM and fuel gauge sending unit. |
PO463
|
Fuel
Level Sending Unit Volts Too High |
Fuel
level sensor input above acceptable voltage. |
PO463
(M) |
Fuel
Level Sending Unit Volts Too High |
Circuit
shorted to voltage between PCM and fuel gauge sending unit. |
P0500
(M) |
No
Vehicle Speed Sensor Signal |
No
vehicle speed sensor signal detected during road Ioad conditions.
|
P0500
(M) |
No
Vehicle Speed Sensor Signal |
A vehicle
speed signal was not detected. |
25 - 8 EMISSIONS CONTROL NS CONTROL (Continued)
(M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was
recorded |
||
| (G)
Generator lamp illuminated |
||
| Generic Scan Tool P-Code
|
DRB Scan Tool Display | Brief Description of DTC |
| P0505 (M) | Idle Air Control Motor Circuits | SBEC II |
| P0522 | Oil Pressure Voltage Too Low | Oil pressure sending unit (sensor) voltage input below the minimum acceptable voltage. |
| P0523 | Oil Pressure Voltage Too High | Oil pressure sending unit (sensor) voltage input above the maximum acceptable voltage. |
| P0524 | Oil Pressure Too Low | Engine oil pressure is low. Engine power derated. |
| P0545 | A/C Clutch Relay Circuit | Problem detected in air conditioning clutch relay control circuit. |
| P0551 | Power Steering Switch Failure | Incorrect input state detected for the power steering switch circuit. PL: High pressure seen at high speed. |
| P0562 | Charging System Voltage Too Low | Supply voltage sensed at ECM too Iow. |
| P0563 | Charging System Voltage Too High | Supply voltage sensed at ECM too high. |
| P0600 | PCM Failure SPI Communications | No communication detected between co-processors in the control module. |
| P0601 (M) | Internat Controller Failure | Internal control module fault condition (check sum) detected. |
| P0602 (M) | ECM Fueling Calibration Error | ECM Internal fault condition detected. |
| P0604 | RAM Check Failure | Transmission control module RAM seif test fault detected. -Aisin transmission |
| P0605 | ROM Check Falure | Transmission control module ROM seif test fault detected -Aisin transmission |
| P0606 (M) | ECM Failure | ECM Internal fault condition detected. |
| P0615 | Starter Relay Control Circuit | An open or shorted condition detected in the starter relay control circuit. |
| P0622 (G) | Generator Field Not Switching Properly | An open or shorted condition detected in the generator field control circuit. |
| P0645 | A/C Clutch Relay Circuit | An open or shorted condition detected in the A/C clutch relay control circuit. |
| P0700 | EATX Controller DTC Present | This SBEC III or JTEC DTC indicates that the EATX or Aisin controller has an active fault and has illuminated the MIL via a CCD (EATX) or SCI (Aisin) message. The specific fault must be acquired from the EATX via CCD or from the Aisin via ISO-9141. |
| P0703 | Brake Switch Stuck Pressed or Released | Incorrect input state detected in the brake switch circuit. (Changed from P1595) |
| P0711 (M) | Trans Temp Sensor, No Temp Rise After Start | Relationship between the transmission temperature and overdrive Operation and/or TCC Operation indicates a failure of the Transmission Temperature Sensor. OBD II Rationality. Was MIL code 37. |
| P0712 | Trans Temp Sensor Voltage Too Low | Transmission fluid temperature sensor input below acceptable voltage. Was MIL code 37. |
| P0712 (M) | Trans Temp Sensor Voltage Too Low | Voltage less than 1.55 volts (4-speed auto. trans. only). |
25 - 9 R/BE EMISSIONS CONTROL (Continued)
| (M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
| (G)
Generator lamp illuminated |
||
| Generic Scan Tool P-Code
|
DRB Scan Tool Display | Brief Description of DTC |
| P0713 | Trans Temp Sensor Voltage Too High | Transmission fluid temperature sensor input above acceptable voltage. Was MIL code 37. |
| P0713 (M) | Trans Temp Sensor Voltage Too High | Voltage greater than 3.76 volts (4-speed auto. trans. only). |
| P0720 (M) | Low Output SPD Sensor RPM, Above 15 MPH | The relationship between the Output Shaft Speed Sensor and vehicle speed is not within acceptable limits. |
| P0720 (M) | Low Output Spd Sensor RPM Above 15 mph | Output shaft speed is less than 60 rpm with vehicle speed above 15 mph (4-speed auto. trans. only). |
| P0740 (M) | Torq Con Clu, No RPM Drop at Lockup | Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU solenoid) |
| P0743 (M) | Torque Converter Clutch Solenoid/ Trans Relay Circuits | An open or shorted condition detected in the torque converter clutch (pari throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Aisin transmission |
| P0743 (M) | Torque Converter Clutch Solenoid/ Trans Relay Circuits | An open or shorted condition detected in the torque converter part throttle unlock solenoid control circuit (3 or 4-speed auto. trans. only). |
| P0748 (M) | Governor Pressur Sol Control/Trans Relay Circuits | An open or shorted condition detected in the Governor Pressure Solenoid circuit or Trans Relay Circuit in JTEC RE transmissions. |
| P0748 (M) | Governor Pressure Sol Control/Trans Relay Circuits | An open or shorted condition detected in the governor pressure solenoid or relay circuits (4-speed auto. trans. only). |
| P0751 (M) | O/D Switch Pressed (Lo) More Than 5 Minutes | Overdrive override switch input is in a prolonged depressed state. |
| P0751 (M) | O/D Switch Pressed (LO) More Than 5 Min | Overdrive Off switch input too Iow for more than 5 minutes (4-speed auto. trans. only). |
| P0753 (M) | Trans 3-4 Shift Sol/Trans Relay Circuits | An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions. Was MIL code 45. |
| P0753 (M) | Trans 3-4 Shift Sol/Trans Relay Circuits | An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. trans. only). |
| P0756 | AW4 Shift Sol B (2-3) Functional Failure | Shift solenoid B (2-3) functional fault - Aisin transmission |
| P0783 (M) | 3-4 Shift Sol, No RPM Drop at Lockup | The overdrive solenoid is unable to engage the gear change from 3rd gear to the overdrive gear. |
| P0801 | Reverse Gear Lockout Circuit Open or Short | An open or shorted condition detected in the transmission reverse gear lock-out solenoid control circuit. |
| P0830 | Clutch Depressed Switch Circuit | Problem detected in clutch switch circuit. |
| P0833 | Clutch Released Switch Circuit | Problem detected in clutch switch circuit. |
| P1110 | Decrease Engine Performance Due To High Intake Air Temperature | Intake manifold air temperature is above the engine protection limit. Engine power will be derated. |
| P1180 | Decreased Engine Performance Due To High Injection Pump Fuel Temp | Fuel temperature is above the engine protection limit. Engine power will be derated. |
25 - 10 EMISSIONS
CONTROL
| (M) Malfunction Indicator
Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
| (G)
Generator lamp illuminated |
||
| Generic Scan Tool P-Code
|
DRB Scan Tool Display | Brief Description of DTC |
| P1195 (M) | 1/1 02 Sensor Slow During Catalyst Monitor | A slow switching oxygen sensor has been detected in bank 1/1 during catalyst monitor test. (Also see SCI DTC $66) (was P0133) |
| P1196 (M) | 2/1 02 Sensor Slow During Catalyst Monitor | A slow switching oxygen sensor has been detected in bank 2/1 during catalyst monitor test. (Also see SCI DTC $7A) (was P0153) |
| P1197 | 1/2 02 Sensor Slow During Catalyst Monitor | A slow switching oxygen sensor has been detected in bank 1/2 during catalyst monitor test. (Also see SCI DTC $68) (was P0139) |
| P1198 | Radiator Temperature Sensor Volts Too High | Radiator coolant temperature sensor input above the maximum acceptable voltage. |
| P1199 | Radiator Temperature Sensor Volts Too Low | Radiator coolant temperature sensor input below the minimum acceptable voltage. |
| P1281 | Engine is Cold Too Long | Engine coolant temperature remains below normal operating temperatures during vehicle travel (Thermostat). |
| P1282 | Fuel Pump Relay Control Circuit | An open or shorted condition detected in the fuel pump relay control circuit. |
| P1283 | Idle Select Signal Invalid | ECM or fuel injection pump module internal fault condition detected. |
| P1284 (M) | Fuel Injection Pump Battery Voltage Out-Of-Range | Fuel injection pump module internal fault condition detected. Engine power will be derated. |
| P1285 (M) | Fuel Injection Pump Controller Always On | Fuel injection pump module relay circuit failure detected. Engine power will be derated. |
| P1286 | Accelerator Position Sensor (APPS) Supply Voltage Too High | High voltage detected at APPS. |
| P1287 | Fuel Injection Pump Controller Supply Voltage Low | ECM or fuel injection pump module internal fault condition detected. Engine power will be derated. |
| P1288 | Intake Manifold Short Runner Solenoid Circuit | An open or shorted condition detected in the short runner tuning valve circuit. |
| P1289 | Manifold Tune Valve Solenoid Circuit | An open or shorted condition detected in the manifold tuning valve solenoid control circuit. |
| P1290 | CNG Fuel System Pressure Too High | Compressed natural gas system pressure above normal operating range. |
| P1291 | No Temp Rise Seen From Intake Heaters | Energizing Heated Air Intake does not change intake air temperature sensor an acceptable amount. |
| P1291 (M) | No Temperature Rise Seen From Intake Air Heaters | Problem detected in intake manifold air heating System. |
| P1292 | CNG Pressure Sensor Voltage Too High | Compressed natural gas pressure sensor reading above acceptable voltage. |
| P1293 | CNG Pressure Sensor Voltage Too Low | Compressed natural gas pressure sensor reading below acceptable voltage. |
| P1294 (M) | Target Idle Not Reached | Target RPM not achieved during drive idle condition. Possible vacuum leak or IAC (AIS) lost steps. |
25 -11 EMISSIONS CONTROL (Continued)
Malfunction
Indicator Lamp (MIL) illuminated during engine operation if this
DTC was recorded |
||
(G) Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB
Scan Tool Display |
Brief
Description of DTC |
P1295 (M) |
No 5 Volts to TP
Sensor |
Loss of a 5 volt
feed to the Throttle Position Sensor has been detected. |
P1295 (M) |
Accelerator Position
Sensor (APPS) Supply Voltage Too Low |
APPS supply voltage
input below the minimum acceptable voltage. |
P1296 |
No 5 Volts to MAP
Sensor |
Loss of a 5 volt
feed to the MAP Sensor has been detected. |
P1297 (M) |
Na Change in MAP
From Start To Run |
Na difference is
recognized between the MAP reading at engine idle and the stored
barometric pressure reading. |
P1298 |
Lean Operation
at Wide Open Throttle |
A prolonged lean
condition is detected during Wide Open Throttle |
P1299 |
Vacuum Leak Found
(IAC Fully Seated) |
MAP Sensor signal
does not correlate to Throttle Position Sensor signal. Possible
vacuum leak. |
P1388 |
Auto Shutdown Relay
Control Circuit |
An open or shorted
condition detected in the ASD or CNG shutoff relay control ckt.
|
P1388 |
Auto Shutdown Relay
Control Circuit |
An open or shorted
condition detected in the auto shutdown relay circuit. |
P1389 |
Na ASD Relay Output
Voltage At PCM |
Na Z1 or Z2 voltage
sensed when the auto shutdown relay is energized. |
P1389 (M) |
Na ASD Relay Output
Voltage at PCM |
An open condition
detected In the ASD relay output circuit. |
P1390 |
Timing Belt Skipped
1 Tooth or More |
Relationship between
Cam and Crank signals not correct |
P1391 (M) |
Intermittent Loss
of CMP or CKP |
Loss of the Cam
Position Sensor or Crank Position sensor has occurred. For PL
2.OL |
P1398 (M) |
Mis-Fire Adaptive
Numerator at Limit |
PCM is unable to
learn the Crank Sensor's signal in preparation for Misfire Diagnostics.
Probable defective Ct'ank Sensor |
P1399 |
Wait To Start Lamp
Cicuit |
An open or shorted
condition detected in the Wait to Start Lamp circuit. |
P1403 |
Na 5V to EGR Sens
|
Loss of 5v feed
to the EGR position sensor. |
P01475 |
Aux 5 Volt Supply
Voltage High |
Sensor supply voltage
for ECM sensors is too high. |
P1476 |
Too Little Secondary
Air |
Insufficient flow
of secondary air injection detected during aspirator test (was
PO411) |
P1477 |
Too Much Secondary
Air |
Excessive flow
of secondary air injection detected during aspirator test (was
PO411). |
P1478 |
Battery Temp Sensor
Volts Out of Limit |
Internat temperature
sensor input voltage out of an acceptable range. |
P1479 |
Transmission Fan
Relay Circuit |
An open or shorted
condition detected in the transmission fan relay circuit. |
P1480 |
PCV Solenoid Circuit
|
An open or shorted
condition detected in the PCV solenoid circuit. |
P1481 |
EATX RPM Pulse
Perf |
EATX RPM pulse
generator signal for misfire detection does not correlate with
expected value. |
25 - 12 EMISSIONS CONTROL (Continued
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation
if this DTC was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
(G) Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB
Scan Tool Display |
Brief
Description of DTC |
P1482
|
Catalyst
Temperature Sensor Circuit Shorted Low |
Catalyst
temperature sensor circuit shorted low. |
P1483
|
Catalyst
Temperature Sensor Circuit Shorted High. |
Catalyst
temperature sensor circuit shorted high. |
P1484
|
Catalytic
Converter Overheat Detected |
A catalyst
overheat condition has been detected by the catalyst temperature
sensor. |
P1485
|
Air
Injection Solenoid Circuit |
An
open or shorted condition detected in the air assist solenoid
circuit. |
P1486
|
Evap
Leak Monitor Pinched Hose Found |
LDP
has detected a pinched hose in the evaporative hose System. |
P1487
|
Hi
Speed Rad Fan CTRL Relay Circuit |
An
open or shorted condition detected in the control circuit of the
#2 high speed radiator fan control relay. |
P1488
|
Auxiliary
5 Volt Supply Output Too Low |
Auxiliary
5 volt sensor feed is sensed to be below an acceptable Iimit.
|
P1488
|
5 Volt
Supply Voltage Low |
Sensor
supply voltage for ECM sensors is too low. |
P1489
|
High
Speed Fan CTRL Relay Circuit |
An
open or shorted condition detected in the control circuit of the
high speed radiator fan control relay. |
P1490
|
Low
Speed Fan CTRL Relay Circuit |
An
open or shorted condition detected in control circuit of the Iow
speed radiator fan control relay. |
P1491
|
Rad
Fan Control Relay Circuit |
An
open or shorted condition detected in the radiator fan control
relay control circuit. This includes PWM solid state relays. |
P1492
|
Ambient/Batt
Temp Sen Volts Too High |
External
temperature sensor input above acceptable voltage. |
P1492
(M) |
Ambient/Batt
Temp Sensor Volts Too High |
Battery
temperature sensor input voltage above an acceptable range. |
P1493
(M) |
Ambient/Batt
Temp Sen Volts Too Low |
External
temperature sensor input below acceptable voltage. |
P1493
(M) |
Ambient/Batt
Temp Sen Volts Too Low |
Battery
temperature sensor input voltage below an acceptable range. |
P1494
(M) |
Leak
Detection Pump Sw or Mechanical Fault |
Incorrect
input state detected for the Leak Detection Pump (LDP) pressure
switch. |
P1495
|
Leak
Detection Pump Solenoid Circuit |
An
open or shorted condition detected in the Leak Detection Pump
(LDP) solenoid circuit. |
P1496
|
5 Volt
Supply, Output Too Low |
5 volt
sensor feed is sensed to be below an acceptable limit. ( less
than 4v for 4 sec ) |
P1498
|
High
Speed Rad Fan Ground CTRL Rly Circuit |
An
open or shorted condition detected in the control circuit of the
#3 high speed radiator fan control relay. |
P1499
|
Hydraulic
cooling fan solenoid circuit |
An
open or shorted condition detected in the cooling fan control
solenoid circuit. |
P1594
(G) |
Charging
System Voltage Too High |
Battery
voltage sense input above target charging voltage during engine
operation. |
P1594
|
Charging
System Voltage Too High |
Battery
voltage sense input above target charging voltage during engine
Operation. |
25 - 13 EMISSIONS CONTROL (Continued)
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation
if this DTC was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
(G) Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB
Scan Tool Display |
Brief
Description of DTC |
P1595
|
Speed
Control Solenoid Circuits |
An
open or shorted condition detected in either of the speed control
vacuum or vent solenoid control circuits. |
P1595
|
Speed
Control Solenoid Circuits |
An
open or shorted condition detected in the speed control vacuum
or vent solenoid circuits. |
P1596
|
Speed
Control Switch Always High |
Speed
control switch input above maximum acceptable voltage. |
P1597
|
Speed
Control Switch Always Low |
Speed
control switch input below minimum acceptable voltage. |
P1597
|
Speed
Control Switch Always Low |
Speed
control switch Input below the minimum acceptable voltage. |
P1598
|
NC Pressure Sensor Volts Too High |
A/C
pressure sensor input above maximum acceptable voltage. |
P1598
|
A/C
Sensor Input Hi |
Problem
detected in air conditioning electrical circuit. |
P1599
|
NC Pressure Sensor Volts Too Low |
A/C
pressure sensor input below minimum acceptable voltage. |
P1599
|
A/C
Sensor Input Lo |
Problem
detected in air conditioning electrical circuit. |
P1680
|
Clutch
Released Switch Circuit |
Problem
detected in clutch switch electrical circuit. |
P1681
|
No
I/P Cluster CCD/J1850 Messages Received |
No
CCD/J1850 messages received from the Cluster control module. |
P1682
(G) |
Charging
System Voltage Too Low |
Battery
voltage sense input below target charging voltage during engine
Operation and no significant change in voltage detected during
active test of generator output circuit. |
P1682
|
Charging
System Voltage Too Low |
Charging
system output voltage Iow. |
P1683
|
SPD
CTRL PWR Relay; or S/C 12v Driver CKT |
An
open or shorted condition detected in the speed control servo
power control circuit. |
P1683
|
Spd
ctrl pwr rly, or s/c 12v driver circuit |
An
open or shorted condition detected in the speed control servo
power control circuit. |
P1684
|
Batt
Loss in 50 Star |
The
battery has been disconnected within the last 50 starts |
P1685
|
SKIM
Invalid Key |
The
engine controler has received an invalid key from the SKIM. |
P1686
|
No
SKIM BUS Messages Received |
No
CCD/J1850 messages received from the Smart Key Immobilizer Module
(SKIM). |
P1687
|
No
MIC BUS Message |
No
CCD/J1850 messages received from the Mechanical Instrument Cluster
(MIC) module. |
P1688
(M) |
Internal
Fuel Injection Pump Controller Failure |
Internal
problem within the fuel injection pump. Low power, engine derated,
or engine stops. |
P1689
(M) |
No
Communication Between ECM and Injection Pump Module |
Data
link circuit failure between ECM and fuel injection pump. Low
power, engine derated, or engine stops. |
P1690
(M) |
Fuel
Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor |
Problem
in fuel sync signal. Possible injection pump timing problem. Low
power, engine derated, or engine stops. |
25 - 14 EMISSIONS CONTROL ONS CONTROL (Continued)
| (M) Malfunction Indicator
Lamp (MIL) illuminated during engine Operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
| (G)
Generator lamp illuminated |
||
| Generic Scan Tool P-Code
|
DRB Scan Tool Display | Brief Description of DTC |
| P1691 | Fuel Injection Pump Controller Calibration Error | Internal fuel injection pump failure. Low Power, engine derated, or engine stops. |
| P1692 | DTC Set In ECM | A "Companion DTC" was set in both the ECM and PCM. |
| P1693 (M) | DTC Detected in Companion Module | A fault has been generated in the companion engine control module. |
| P1693 (M) | DTC Detected in PCM/ECM or DTC Detected in ECM | A "Companion DTC" was set in both the ECM and PCM. |
| P1694 | Fault In Companion Module | No CCD/J1850 messages received from the powertrain control module-Aisin transmission |
| P1694 (M) | No CCD Messages received from ECM | Bus communication failure to PCM. |
| P1695 | No CCD/J1850 Message From Body Control Module | No CCD/J1850 messages received from the Body control module. |
| P1696 | PCM Failure EEPROM Write Denied | Unsuccessful attempt to write to an EEPROM location by the control module. |
| P1697 | PCM Failure SRI Mile Not Stored | Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM. |
| P1698 | No CCD/J1850 Message From TCM | No CCD/J1850 messages received from the electronic transmissiön control module (EATX) or the Aisin transmission controller. |
| P1698 | No CCD Messages received from PCM | Bus communication failure to PCM. A "Companion DTC" was set in both the ECM and PCM. |
| P1719 | Skip Shift Solenoid Circuit | An open or shorted condition detected in the transmission 2-3 gear lock-out solenoid control circuit. |
| P1740 | TCC or OD Sol Perf | A rationality error has been detected in either the TCC solenoid or overdrive solenoid systems. |
| P1740 (M) | TCC OR O/D Solenoid Performance | Problem detected in transmission convertor clutch and/or overdrive circuits (diesel engine with 4-speed auto. trans. only). |
| P1756 (M) | GOV Press Not Equal to Target @ 15-20 PSI | The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for Ist, 2nd, and 3rd gear. (Mid Pressure Malfunction) |
| P1756 (M) | Governor Pressure Not Equal to Target @ 15-20 PSI | Governor sensor input not between 10 and 25 psi when requested (4-speed auto. trans. only). |
| P1757 | GOV Press Not Equal to Target @ 15-20 PSI | The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for ist, 2nd, and 3rd gear (Zero Pressure Malfunction) |
| P1757 (M) | Governor Pressure Above 3 PSI In Gear With 0 MPH | Governor pressure greater than 3 psi when requested to be 0 psi (4-speed auto. trans. only). |
25 - 15 EMISSIONS
CONTROL (Continued)
(M)
Malfunction Indicator Lamp (MIL) illuminated during engine operation
if this DTC was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon an instrument panel. |
||
(G) Generator lamp illuminated |
||
Generic
Scan Tool P-Code |
DRB
Scan Tool Display |
Brief
Description of DTC |
P1762
(M) |
Gov
Press Sen Offset Volts Too Lo or High |
The
Governor Pressure Sensor input is greater than a calibration limit
or is less than a calibration limit for 3 consecutive park/neutral
calibrations. |
P1762
(M) |
Governor
Press Sen Offset Volts Too Low or High |
Sensor
input greater or less than calibration for 3 consecutive Neutral/Park
occurrences (4-speed auto. trans. only). |
P1763
|
Governor
Pressure Sensor Volts Too Hi |
The
Governor Pressure Sensor input is above an acceptable voltage
level. |
P1763
(M) |
Governor
Pressure Sensor Volts Too HI |
Voltage
greater than 4.89 volts (4-speed auto. trans. only). |
P1764
(M) |
Governor
Pressure Sensor Volts Too Low |
The
Governor Pressure Sensor input is below an acceptable voltage
level. |
P1764
(M) |
Governor
Pressure Sensor Volts Too Low |
Voltage
less than .10 volts (4-speed auto. trans. only). |
P1765
(M) |
Trans
12 Volt Supply Relay CTRL Circuit |
An
open or shorted condition is detected in the Transmission Relay
control circuit. This relay supplies power to the TCC |
P1765
(M) |
Trans
12 Volt Supply Relay Ctrl Circuit |
Current
state of solenoid output port is different than expected (4-speed
auto. trans. only). |
P1899
(M) |
P/N
Switch Stuck in Park or in Gear |
Incorrect
input state detected for the Park/Neutral switch. |
P1899
(M) |
P/N
Switch Stuck in Park or in Gear |
Incorrect
input state detected for the Park/Neutral switch (3 or 4-speed
auto. trans. only). |
DESCRIPTION - TASK MANAGER
The PCM is responsible for efficiently coordinating
the operation of all the emissions-related
components. The PCM is also responsible for determining if the
diagnostic systems are operating properly.
The software designed to carry out these responsibilities is call the
'Task Manager'.
DESCRIPTION - MONITORED SYSTEMS
There are new electronic circuit monitors that check
fuel, emission, engine and ignition performance.
These monitors use information from various sensor circuits to indicate
the overall operation of the fuel,
engine, ignition and emission systems and thus the emissions performance
of the vehicle.
The fuel, engine, ignition and emission systems monitors
do not indicate a specific component problem.
They do indicate that there is an implied problem within one of
the systems and that a specific problem
must be diagnosed.
If any of these monitors detect a problem affecting
vehicle emissions, the Malfunction Indicator Lamp
(MIL) will be illuminated. These monitors generate
Diagnostic Trouble Codes that can be displayed with the MIL or a scan tool.
The following is a list of the system monitors:
- Misfire Monitor
- Fuel System Monitor
- Oxygen Sensor Monitor
- Oxygen Sensor Heater Monitor
- Catalyst Monitor
- Leak Detection Pump Monitor (if equipped)
All these system monitors require two consecutive trips with the malfunction present to set a fault.
Refer to the appropriate Powertrain Diagnostics Procedures manual for diagnostic procedures.
The following is an operation and description of each system monitor:
OXYGEN SENSOR (02S) MONITOR
Effective control of exhaust emissions is achieved
by an oxygen feedback system.
The most important element of the feedback system is the 02S. The 02S
is located in the exhaust path.
Once it reaches operating temperature 300° to 350°C (572°
to 662°F), the sensor generates
a voltage that is inversely propor-