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Diagnostic Trouble Code Definitions

DTC MESSAGES & CODES

Generic Scan Tool Code DRB Scan Tool Message
P0107  MAP SENSOR VOLTAGE TOO LOW
P0108  MAP SENSOR VOLTAGE TOO HIGH
P0112  INTAKE AIR TEMP SENSOR VOLTAGE LOW
P0113  INTAKE AIR TEMP SENSOR VOLTAGE HIGH
P0117  ECT SENSOR VOLTAGE TOO LOW
P0118  ECT SENSOR VOLTAGE TOO HIGH
P0121  TPS VOLTAGE DOES NOT AGREE WITH MAP
P0122  THROTTLE POSITION SENSOR VOLTAGE LOW
P0123  THROTTLE POSITION SENSOR VOLTAGE HIGH
P0125  CLOSED LOOP TEMP NOT REACHED
P0131  1/1 O2 SENSOR SHORTED TO GROUND
P0132  1/1 O2 SENSOR SHORTED TO VOLTAGE
P0133  1/1 O2 SENSOR SLOW RESPONSE
P0135  1/1 O2 SENSOR HEATER FAILURE
P0137 (1) 1/2 O2 SENSOR SHORTED TO GROUND
P0138 (1) 1/2 O2 SENSOR SHORTED TO VOLTAGE
P0139 (1) 1/2 O2 SENSOR SLOW RESPONSE
P0141 (1) 1/2 O2 SENSOR HEATER FAILURE
P0171  1/1 FUEL SYSTEM LEAN
P0172  1/1 FUEL SYSTEM RICH
P0182 (2) CNG TEMP SENSOR LOW
P0183 (2) CNG TEMP SENSOR HIGH
P0201  INJECTOR #1 CONTROL CIRCUIT
P0202  INJECTOR #2 CONTROL CIRCUIT
P0203  INJECTOR #3 CONTROL CIRCUIT
P0204  INJECTOR #4 CONTROL CIRCUIT
P0205  INJECTOR #5 CONTROL CIRCUIT
P0206  INJECTOR #6 CONTROL CIRCUIT
P0207 (3) INJECTOR #7 CONTROL CIRCUIT
P0208 (3) INJECTOR #8 CONTROL CIRCUIT
P0300  MULTIPLE CYLINDER MISFIRE
P0301  CYLINDER #1 MISFIRE
P0302  CYLINDER #2 MISFIRE
P0303  CYLINDER #3 MISFIRE
P0304  CYLINDER #4 MISFIRE
P0305  CYLINDER #5 MISFIRE
P0306  CYLINDER #6 MISFIRE
P0307 (3) CYLINDER #7 MISFIRE
P0308 (3) CYLINDER #8 MISFIRE
P0320  NO CRANK REFERENCE SIGNAL AT PCM
P0340  NO CAM SIGNAL AT PCM
P0351  IGNITION COIL #1 PRIMARY CIRCUIT
P0420 (1) 1/1 CATALYTIC CONVERTER EFFICIENCY
P0441 (1) EVAP PURGE FLOW MONITOR
P0442 (4) EVAP LEAK MONITOR MEDIUM (.040) LEAK DETECTED
P0443 (1) EVAP PURGE SOLENOID CIRCUIT
P0455 (4) EVAP LEAK MONITOR LARGE LEAK DETECTED
P0456 (4) EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED
P0460 (1) FUEL LEVEL UNIT NO CHANGE OVER MILES
P0461 (1) FUEL LEVEL UNIT NO CHANGE OVER TIME
P0462  FUEL LEVEL SENDING UNIT VOLTS TOO LOW
P0463  FUEL LEVEL SENDING UNIT VOLTS TOO HIGH
P0500  NO VEHICLE SPEED SENSOR SIGNAL
P0505  IDLE AIR CONTROL MOTOR CIRCUITS
P0601  PCM INTERNAL CONTROLLER FAILURE
P0622  GENERATOR FIELD NOT SWITCHING PROPERLY
P0645  A/C CLUTCH RELAY CIRCUIT
P0711 (5) TRANS TEMP SENSOR, NO TEMP RISE AFTER START
P0712 (5) TRANS TEMP SENSOR VOLTAGE TOO LOW
P0713 (5) TRANS TEMP SENSOR VOLTAGE TOO HIGH
P0720 (5) LOW OUTPUT SPEED SENSOR RPM, ABOVE 15 MPH
P0740 (5) TORQ CON CLU, NO RPM DROP AT LOCKUP
P0743 (5) TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITS
P0748 (5) GOVERNOR PRESSURE SOL CONTROL/TRANS RELAY CIRCUITS
P0751 (5) O/D SWITCH PRESSED (LO) MORE THAN 5 MINUTES
P0753 (5) TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS
P0783 (5) 3-4 SHIFT SOL, NO RPM DROP AT LOCKUP
P1195  1/1 O2 SENSOR SLOW DURING CATALYST MONITOR
P1281 (1) ENGINE IS COLD TOO LONG
P1282  FUEL PUMP RELAY CONTROL CIRCUIT
P1292 (2) CNG PRESSURE SENSOR HIGH
P1293 (2) CNG PRESSURE SENSOR LOW
P1294  TARGET IDLE NOT REACHED
P1296  NO 5 VOLTS TO MAP SENSOR
P1297  NO CHANGE IN MAP FROM START TO RUN
P1388  AUTO SHUTDOWN RELAY CONTROL CIRCUIT
P1389  NO ASD RELAY OUTPUT VOLTAGE AT PCM
P1391  INTERMITTENT LOSS OF CMP OR CKP
P1398  MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT
P1486 (4) EVAP LEAK MONITOR PINCHED HOSE FOUND
P1492  AMBIENT/BATT TEMP SEN VOLTS TOO HIGH
P1493  AMBIENT/BATT TEMP SEN VOLTS TOO LOW
P1494 (4) LEAK DETECTION PUMP SW OR MECHANICAL FAULT
P1495 (4) LEAK DETECTION PUMP SOLENOID CIRCUIT
P1594  CHARGING SYSTEM VOLTAGE TOO HIGH
P1595  SPEED CONTROL SOLENOID CIRCUITS
P1596  SPEED CONTROL SWITCH ALWAYS HIGH
P1597  SPEED CONTROL SWITCH ALWAYS LOW
P1682  CHARGING SYSTEM VOLTAGE TOO LOW
P1683  SPD CTRL PWR RELAY; OR S/C 12V DRIVER CIRCUIT
P1687  NO CLUSTER BUS MESSAGE
P1696  PCM FAILURE EEPROM WRITE DENIED
P1740 (5) TCC OR O/D SOLENOID PERFORMANCE
P1756 (5) GOV PRESS NOT EQUAL TO TARGET @ 15-20 PSI
P1757 (5) GOV PRESS ABOVE 3 PSI IN GEAR WITH 0 MPH
P1762 (5) GOV PRESS SEN OFFSET VOLTS TOO LOW OR HIGH
P1763 (5) GOVERNOR PRESSURE SENSOR VOLTS TOO HIGH
P1764 (5) GOVERNOR PRESSURE SENSOR VOLTS TOO LOW
P1765 (5) TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT
P1899 (5) P/N SWITCH STUCK IN PARK OR IN GEAR
(1) Applies only to gasoline models.
(2) Applies only to CNG models.
(3) Applies only to 5.2L and 5.9L.
(4) Applies only to gasoline models with Calif. emissions.
(5) For A/T diagnostic procedures, see appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.