LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1998 >> Forward Control 6.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes - Introduction >> Self-Diagnostic System >> Diagnostic Trouble Code (DTC) Definition >> Cars

Diagnostic Trouble Code (DTC) Definition: Cars

TROUBLE CODE DEFINITION - CARS

DTC (1) Definition
P0100 MAF Sensor Circuit
P0101 MAF System Performance
P0102 MAF Sensor Circuit-Low Frequency
P0103 MAF Sensor Circuit-High Frequency
P0105 MAP Sensor Circuit-Insufficient Activity
MAP Sensor Circuit Range/Performance
MAP/TP Sensor Performance/Range
P0106 MAP System Performance
P0107 MAP Sensor Circuit-Low Voltage
P0108 MAP Sensor Circuit-High Voltage
P0110 IAT Sensor Circuit
P0111 IAT Sensor Circuit Performance
P0112 IAT Sensor Circuit-High Temperature
IAT Sensor Circuit-Low Voltage
P0113 IAT Sensor Circuit-Low Temperature
IAT Sensor Circuit-High Voltage
P0115 ECT Sensor Circuit
P0116 ECT Sensor Circuit Performance
P0117 ECT Sensor Circuit-High Temperature
ECT Sensor Circuit-Low Voltage
P0118 ECT Sensor Circuit-Low Temperature
ECT Sensor Circuit-High Voltage
P0120 TP System Performance
P0121 TP Sensor Performance
TP Sensor Circuit-Insufficient Activity
P0122 TP Sensor Circuit-Low Voltage
P0123 TP Sensor Circuit-High Voltage
P0125 ECT Excessive Time To Enter Closed Loop Fuel Control
P0130 Closed Loop Rationality
HO2S Circuit-Bank 1, Sensor 1
P0131 O2S/HO2S Circuit-Low Voltage-Sensor 1
HO2S Circuit-Low Voltage-Bank 1, Sensor 1
P0132 O2S/HO2S Circuit-High Voltage-Sensor 1
HO2S Circuit-High Voltage-Bank 1, Sensor 1
P0133 O2S/HO2S Circuit-Slow Response-Sensor 1
HO2S Circuit-Slow Response-Bank 1, Sensor 1
P0134 O2S/HO2S Circuit-Insufficient Activity-Sensor 1
HO2S Circuit-Insufficient Activity-Bank 1, Sensor 1
P0135 HO2S Heater Circuit-Sensor 1
HO2S Heater Circuit-Bank 1, Sensor 1
P0136 HO2S Circuit-Bank 1, Sensor 2
P0137 HO2S Circuit-Low Voltage-Sensor 2
HO2S Circuit-Low Voltage-Bank 1, Sensor 2
P0138 HO2S Circuit-High Voltage-Sensor 2
HO2S Circuit-High Voltage-Bank 1, Sensor 2
P0139 HO2S Slow Response-Bank 1, Sensor 2
P0140 HO2S Circuit-Insufficient Activity-Sensor 2
HO2S Circuit-Insufficient Activity-Bank 1, Sensor 2
P0141 HO2S Heater Circuit-Sensor 2
HO2S Heater Circuit-Bank 1, Sensor 2
P0143 HO2S Circuit-Low Voltage-Bank 1, Sensor 3
P0144 HO2S Circuit-High Voltage-Bank 1, Sensor 3
P0146 HO2S Circuit-Insufficient Activity-Bank 1, Sensor 3
P0147 HO2S Heater Circuit-Bank 1, Sensor 3
P0150 HO2S Circuit-Bank 2, Sensor 1
P0151 HO2S Circuit-Low Voltage-Bank 2, Sensor 1
P0152 HO2S Circuit-High Voltage-Bank 2, Sensor 1
P0153 HO2S Circuit-Slow Response-Bank 2, Sensor 1
P0154 HO2S Circuit-Insufficient Activity-Bank 2, Sensor 1
P0155 HO2S Heater Circuit-Bank 2, Sensor 1
P0156 HO2S Circuit-Bank 2, Sensor 2
P0157 HO2S Circuit-Low Voltage-Bank 2, Sensor 2
P0158 HO2S Circuit-High Voltage-Bank 2, Sensor 2
P0159 HO2S Circuit-Insufficient Activity-Bank 1, Sensor 2
P0160 HO2S Circuit-Insufficient Activity-Bank 2, Sensor 2
P0161 HO2S Heater Circuit-Bank 2, Sensor 2
P0171 Fuel Trim System Lean
Fuel Trim System Lean-Bank 1
P0172 Fuel Trim System Rich
Fuel Trim System Rich-Bank 1
P0174 Fuel Trim System Lean-Bank 2
P0175 Fuel Trim System Rich-Bank 2
P0200 Injector Control Circuit
P0201 Injector No. 1 Control Circuit
P0202 Injector No. 2 Control Circuit
P0203 Injector No. 3 Control Circuit
P0204 Injector No. 4 Control Circuit
P0205 Injector No. 5 Control Circuit
P0206 Injector No. 6 Control Circuit
P0207 Injector No. 7 Control Circuit
P0208 Injector No. 8 Control Circuit
P0217 ECT Sensor Circuit-Over-Temperature
P0218 Transaxle Over-Temperature
P0230 Fuel Pump Relay Control Circuit
P0231 Fuel Pump Feedback Circuit-Low Voltage
P0232 Fuel Pump Feedback Circuit-High Voltage
P0243 Supercharger Boost Solenoid Control Circuit
P0300 Engine Misfire Detected
P0301 Cyl. No. 1 Misfire Detected
P0302 Cyl. No. 2 Misfire Detected
P0303 Cyl. No. 3 Misfire Detected
P0304 Cyl. No. 4 Misfire Detected
P0305 Cyl. No. 5 Misfire Detected
P0306 Cyl. No. 6 Misfire Detected
P0322 IC Module 4X Reference Circuit-No Frequency
P0325 Knock Sensor Circuit/System
Knock Sensor Circuit-Bank 1
Knock Sensor Module Circuit
P0326 Knock Sensor System Performance
Knock Sensor Circuit-Excessive Spark Retard
P0327 Knock Sensor System
Knock Sensor No. 1 Circuit
Knock Sensor Circuit-Bank 1
Knock Sensor Circuit-Front
Knock Sensor Circuit-Low Voltage
P0330 Knock Sensor Circuit-Bank 2
P0332 Knock Sensor No. 2 Circuit
Knock Sensor Circuit-Bank 2
Knock Sensor Circuit-Rear
P0335 CKP Sensor Circuit
CKP Sensor "A" Circuit
P0336 CKP Sensor Circuit Performance
18X Reference Signal Circuit
24X Reference Signal Circuit
P0340 CMP Sensor Circuit
IC Module CAM Reference Circuit-No Frequency
P0341 CMP Sensor Circuit Performance
P0342 CMP Sensor Circuit-Low Input/Voltage
P0343 CMP Sensor Circuit-High Voltage
P0351 IC Circuits No. 1 & 4
Ignition Coil No. 1 Control Circuit
P0352 IC Circuits No. 2 & 3
Ignition Coil No. 2 Control Circuit
P0353 Ignition Coil No. 3 Control Circuit
P0354 Ignition Coil No. 4 Control Circuit
P0355 Ignition Coil No. 5 Control Circuit
P0356 Ignition Coil No. 6 Control Circuit
P0357 Ignition Coil No. 7 Control Circuit
P0358 Ignition Coil No. 8 Control Circuit
P0371 IC 24X Reference Circuit-Too Many Pulses
P0372 IC 24X Reference Circuit-Missing Pulses
P0385 CKP Sensor "B" Circuit
P0401 EGR System
EGR System-Flow Insufficient
P0403 EGR Solenoid Control Circuit
P0404 EGR System Performance
EGR Valve Open Pintle Position
EGR Valve Circuit-Performance Actual Less Than Command
P0405 EGR Valve Position Sensor Circuit-Low Voltage/Out Of Range
P0410 AIR System
P0411 AIR System-No Flow Detected
P0412 AIR Solenoid Valve Control Circuit
AIR Solenoid Relay Control Circuit
P0418 AIR Pump Relay Control Circuit
P0420 Catalyst System-Efficiency Below Threshold
TWC System-Low Efficiency
TWC System-Low Efficiency-Bank 1
P0422 TWC System-Low Efficiency-Bank 1
P0430 TWC System-Low Efficiency-Bank 2
P0432 TWC System-Low Efficiency-Bank 2
P0440 EVAP System
P0442 EVAP Control System-Small Leak Detected
P0443 EVAP Purge Valve Control
EVAP Purge Solenoid Valve Control Circuit
P0446 EVAP Canister Vent Blocked
EVAP Vent Valve Control
P0449 EVAP Vent Valve Control Circuit Shorted
EVAP Canister Vent Solenoid Valve Control Circuit
P0450 EVAP Fuel Tank Pressure Sensor Circuit
P0452 Fuel Tank Pressure Sensor-Low Voltage
P0453 Fuel Tank Pressure Sensor-High Voltage
P0455 EVAP System Leak Detected
P0460 Fuel Level Sensor Circuit
P0461 Fuel Level Sensor Circuit Performance
P0462 Fuel Level Sensor Circuit-Low Voltage
P0463 Fuel Level Sensor Circuit-High Voltage
P0480 Coolant Fan
Fan Control Relay No. 1 Control Circuit
P0481 Fan Control Relay No. 2 Control Circuit
Fan Control Relay No. 2 & 3 Control Circuit
P0500 VSS Circuit
P0502 VSS Circuit-Low Input (M/T)
P0506 Idle Speed Low
Idle Control System-Low RPM
P0507 Idle Speed High
Idle Control System-High RPM
P0522 Engine Oil Pressure Sensor Circuit-Low Voltage
P0523 Engine Oil Pressure Sensor Circuit-High Voltage
P0530 A/C Refrigerant Pressure Sensor Circuit
P0532 A/C Pressure Sensor Circuit-Low Voltage
P0533 A/C Pressure Sensor Circuit-High Voltage
P0550 PSP Switch Circuit
P0560 System Voltage
System Voltage Low
P0561 System Voltage Performance
P0562 System Voltage Low
P0563 System Voltage High
P0565 Cruise Switch Circuit
P0567 Cruise Resume Circuit
P0568 Cruise Set Circuit
P0571 Brake Switch Circuit
Cruise/Brake Switch Circuit
P0572 Cruise/Brake Switch Circuit-Low Voltage
P0573 Cruise/Brake Switch Circuit-High Voltage
P0600 Serial Communication
P0601 ECM/PCM Memory
P0602 ECM/PCM Not Programmed
P0603 ECM/PCM Memory Reset
P0604 ECM/PCM RAM Performance
P0605 ECM EEPROM
P0606 ECM/PCM Internal Performance
PCM Internal Communication Interrupted
P0608 VSS Output Circuit
P0645 A/C Clutch Relay Control Circuit
P0650 MIL Control Circuit
P0654 Engine Speed Output Circuit
P0656 Fuel Gauge/Level Control Circuit
P0704 Clutch Switch Circuit
P0705(2) PNP Switch Circuit
Trans. Range Switch Circuit
P0706(2) Trans. Range Switch Performance
P0801(2) Reverse Inhibit Solenoid Control Circuit
P0803(2) Skip Shift Solenoid Control Circuit
1-4 Upshift Solenoid Control Circuit
P0804(2) 1-4 Upshift Light Control Circuit
P1106 MAP Sensor Circuit-Intermittent High Voltage
P1107 MAP Sensor Circuit-Intermittent Low Voltage
P1108 BARO-To-MAP Sensor Circuit-Comparison Too High
P1111 IAT Sensor Circuit-Intermittent High Voltage
P1112 IAT Sensor Circuit-Intermittent Low Voltage
Intake Plenum Switchover Valve Circuit
P1113 Intake Resonance Switchover Valve Circuit
P1114 ECT Sensor Circuit-Intermittent Low Voltage
P1115 ECT Sensor Circuit-Intermittent High Voltage
P1120 TP Sensor No. 1 Circuit
P1121 TP Sensor Circuit-Intermittent High Voltage
P1122 TP Sensor Circuit-Intermittent Low Voltage
P1125 APP System
P1133 O2S/HO2S Insufficient Switching-Sensor 1
HO2S Insufficient Switching-Bank 1, Sensor 1
P1134 O2S Rich/Lean Lean/Rich Ratio Error-Sensor 1
HO2S Transition Time Ratio-Sensor 1
HO2S Transition Time Ratio-Bank 1, Sensor 1
P1141 HO2S Heater Circuit-Bank 1, Sensor 2
P1153 HO2S Circuit-Insufficient Switching-Bank 2, Sensor 1
P1154 HO2S Transition Time Ratio-Bank 2, Sensor 1
P1161 HO2S Heater Circuit-Bank 2, Sensor 2
P1171 Fuel System Lean During Acceleration
P1189 Engine Oil Pressure Switch Circuit
P1215 PCM Driver Circuit
Quad Driver Output
P1220 TP Sensor No. 2 Circuit
P1221 TP Sensor Circuit
TP Sensor No. 1 & 2 Performance
P1257 Supercharger System Overboost
P1258 Engine Metal Over-Temperature Protection
Engine Coolant Over-Temperature-Fuel Disabled
P1271 APP Sensors No. 1 & 2
P1275 APP Sensor No. 1 Circuit
P1276 APP Sensor No. 1 Circuit Performance
P1280 APP Sensor No. 2 Circuit
P1281 APP Sensor No. 2 Circuit Performance
P1285 APP Sensor No. 3 Circuit
P1286 APP Sensor No. 3 Circuit Performance
P1320 IC 4X Reference Circuit-Intermittent
P1323 IC 24X Reference Circuit-Low Frequency
P1336 CKP System Variation Not Learned
P1350 Ignition Control System
P1351 IC Circuit Open/High Voltage
IC Circuit No. 1-High Voltage
IC Circuits No. 1 & 4-High Voltage
P1352 By-Pass Circuit Open
IC Circuit No. 2-High Voltage
IC Circuits No. 2 & 3-High Voltage
P1353 IC Circuit No. 3-High Voltage
P1354 IC Circuit No. 4-High Voltage
P1355 IC Circuit No. 5-High Voltage
P1356 IC Circuit No. 6-High Voltage
P1361 IC Circuit Not Toggling
IC Circuit No. 1-Low Voltage
P1362 By-Pass Circuit Shorted
By-Pass Line-Low Voltage
IC Circuit No. 2-Low Voltage
P1363 IC Circuit No. 3-Low Voltage
P1364 IC Circuit No. 4-Low Voltage
P1365 IC Circuit No. 5-Low Voltage
P1366 IC Circuit No. 6-Low Voltage
P1370 IC 4X Reference Circuit-Too Many Pulses
P1371 IC 4X Reference Circuit-Too Few Pulses
P1372 IC System Occasional Resync
P1374 3X Reference Circuit
P1375 IC 24X Reference Circuit-High Voltage
P1376 Ignition Ground Circuit
P1377 IC CAM Pulse-To-4X Reference Pulse
P1380 ABS Requested Service Light
ABS/EBCM/EBTCM DTC Rough Road Data Unstable
P1381 Misfire Detected, No ABS/EBCM/PCM Serial Data
P1404 EGR Valve Pintle Stuck Open
EGR Valve Pintle Stuck Closed
EGR Valve Circuit-Performance Actual Less Than Commanded
EGR Valve Circuit-Performance Actual Greater Than Commanded
P1415 AIR System-Bank 1
P1416 AIR System-Bank 2
P1431 Fuel Level Sensor No. 2 Circuit Performance
P1432 Fuel Pressure Sensor Circuit-Low Voltage
Fuel Level Sensor No. 2 Circuit-Low Voltage
P1433 Fuel Pressure Sensor Circuit-High Voltage
Fuel Level Sensor No. 2 Circuit-High Voltage
P1441 EVAP System Flow During Non-Purge
P1460 Misfire Detected With Low Fuel
DTC P1483 Engine Cooling System Performance
Engine Cooling System-High Temperature
P1501 Theft Deterrent System
P1502 Theft Deterrent-No Password Received
P1503 Theft Deterrent Password Incorrect
P1508 IAC System Low RPM
P1509 IAC System High RPM
P1510 Throttle Control System In Limitation
P1511 Throttle Control System-Back-Up System Performance
P1514 TAC System MAF Performance
P1515 Command Vs. Actual TP Performance (PCM)
Predicted Vs. Actual TP Performance
P1516 Command Vs. Actual TP Correlation
Commanded Vs. Actual TP Performance (TAC)
P1517 TAC Module Processor
P1518 PCM-To-TAC Module Serial Data Circuit
P1519 TAC Module Internal Circuit
P1520 PNP Switch Circuit
Gear Indicator System
P1523 TAC Return Performance
P1524 TP Sensor Learned Closed Throttle Angle
P1526 TP Sensor Learn Not Complete
P1527 Transaxle Range/Pressure Switch Comparison
P1530 Throttle Control System Amp. Adjustment
P1533 A/C Low Side Temperature Sensor Circuit
P1535 A/C High Side Temperature Sensor Circuit
P1536 A/C System ECT Over-Temperature
P1537 A/C Request Circuit-Low Voltage
P1538 A/C Request Circuit-High Voltage
P1539 A/C Clutch Status Circuit-High Voltage
P1540 A/C System-High Pressure Condition
P1542 A/C System-High Pressure/High Temperature
P1545 A/C Compressor Clutch Relay Control Circuit
P1546 A/C Relay Circuit Fault
A/C Clutch Status Circuit-Low Voltage
A/C Compressor Clutch Relay Control Circuit
P1554 Cruise Control Status Circuit
Cruise Engaged Circuit-High Voltage
P1555 EVO Solenoid Control Circuit
P1560 Cruise Control-Transaxle Not In Drive
P1564 Cruise Control-Acceleration Too High
P1566 Cruise Control-Engine RPM Too High
P1567 Cruise Control-ABCS Active
P1570 Cruise Control-Traction Control Active
P1571 ASR Desired Torque Circuit
TCS Desired Torque Circuit
Traction Control PWM Circuit-No Frequency
P1573 PCM/EBTCM Serial Data Circuit
P1574 Stoplight Switch Control Circuit
EBTCM Stoplight Switch Circuit-High Voltage
P1575 Extended Travel Brake Switch Circuit
P1579 P/N-To-D/R At High Throttle Angle
P1580 Cruise Control Move Circuit-Low Voltage
P1581 Cruise Control Move Circuit-High Voltage
P1582 Cruise Control Direction Circuit-Low Voltage
P1583 Cruise Control Direction Circuit-High Voltage
P1584 Cruise Control Disabled
P1585 Cruise Inhibit Control Circuit
P1599 Engine Stall Or Near Stall Detected
P1601 PCM Serial Communications
P1602 KS Module Circuit
PCM Serial Communications
Loss Of EBCM/EBTCM Serial Data
P1603 Loss Of SDM Serial Data
P1604 IPC Serial Data Circuit
Loss Of IPC Serial Data
P1605 HVAC Serial Data Circuit
Loss Of HVAC Serial Data
P1610 Class 2 Failure With BFC
Loss Of BCM/PZM Serial Data
Standard Body Module Serial Data Circuit
P1611 Loss Of CVRTD Serial Data
P1612 Loss Of IPM Serial Data
P1613 Loss Of DIM Serial Data
P1614 Loss Of RIM Serial Data
P1615 Loss Of VTD Serial Data
P1617 Engine Oil Level Switch Circuit
P1619 Engine Oil Life Monitor Reset Circuit
P1620 Low Engine Coolant
P1621 PCM Memory Performance
Loss Of Serial Communications Link
P1623 TFT Sensor Pull-Up Resistor
P1624 Customer Snap Shot
P1625 PCM Checksum-Transaxle Memory
P1626 Loss Of Serial Communication With VTD
Theft Deterrent System Fuel Enable Circuit
P1627 PCM/EC Analog/Digital
P1628 ECT Pull-Up Resistor
P1629 Theft Deterrent-Loss Of/Malfunctioning Cranking Signal
P1630 Theft Deterrent-PCM In Learn Mode
P1631 Theft Deterrent Password Incorrect
P1632 Theft Deterrent System Fuel Disabled
P1633 Ignition Supplement Power Circuit-Low Voltage
P1634 Ignition 1 Power Circuit-Low Voltage
P1635 5-Volt Reference Circuit
5-Volt Reference "A" Circuit
5-Volt Reference No. 1 Circuit
P1637 Generator Light Control Circuit
Generator "L" Terminal Circuit
P1638 Generator "F" Terminal Circuit
P1639 PCM/TC Analog/Digital
5-Volt Reference "B" Circuit
5-Volt Reference No. 2 Circuit
P1640 Quad Driver Module "A"
Driver No. 1 Input-High Voltage
P1641 MIL Control Circuit
A/C Relay Control Circuit
Quad Driver Module "A"-Quick Set
P1642 Vehicle Speed Output Circuit
P1644 Delivered Torque Output Circuit
P1645 EVAP Solenoid Output Circuit
P1646 EVAP Vent Valve Output Circuit
Boost Control Solenoid Control Circuit
P1650 Quad Driver Module "B"
Driver No. 2 Input-High Voltage
P1651 Quad Driver Module "B"-Quick Set
Fan No. 1 Relay Control Circuit
P1652 Lift/Dive Output Circuit
Fan No. 2 Relay Control Circuit
PCM Chassis Pitch Output Circuit
P1653 Low Oil Light Circuit Fault
Fuel Level Output Control Circuit
P1654 Cruise Disable Output Circuit
P1660 TCM GFD
Cooling Fan Control Circuits
P1662 Cruise Control Light Control Circuit
Cruise Control Inhibit Control Circuit
P1663 Generator Light Control Circuit
P1665 EVAP Vent Valve Solenoid Control Circuit
P1667 Fuel Pump PWM Control Circuit
P1671 MIL Control Circuit
Quad Driver Module "C"-Quick Set
P1673 Engine Hot Light Control Circuit
P1676 EVAP Purge Valve Control Circuit
EVAP Canister Purge Solenoid Control Circuit
P1689 Delivered Torque Control Circuit Fault
Traction Control Delivered Torque Control Circuit
P1845 Torque Limit Management
U1016 Serial Communications Malfunction
(1) DTC definitions may vary depending on vehicle and/or engine configuration.
(2) See appropriate ELECTRONIC CONTROLS article in TRANSMISSIONS.