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General Motors Car Factory DTC Code Definitions

P1106 - MAP Sensor Intermittent Voltage High
P1107 - MAP Sensor Intermittent Voltage Low
P1108 - BARO To MAP Signal Comparison Too High
P1111 - IAT Sensor Intermittent Voltage High
P1112 - IAT Sensor Intermittent Voltage Low (Ex. Catera) Intake Plenum Switchover Valve Control (Catera)
P1113 - Intake Resonance Switchover Valve Control
P1114 - ECT Sensor Intermittent Voltage Low
P1115 - ECT Sensor Intermittent Voltage High
P1120 - TP Sensor 1
P1121 - TP Sensor Intermittent Voltage High
P1122 - TP Sensor Intermittent Voltage Low
P1125 - APP System
P1133 - HO2S/O2S Insufficient Switching Sensor 1 Or Bank 1 Sensor l
P1134 - HO2S Transition Time Ratio Bank 1 Sensor 1
P1137 - HO2S Low Voltage During Power Enrichment Sensor 2
P1138 - HO2S Low Voltage During Decal Cut Off Sensor 2
P1139 - HO2S Insufficient Switching Bank 1 Sensor 2
P1140 - HO2S Transition Time Ratio Bank 1 Sensor 2
P1141 - Heater Bank 1 Sensor 1
P1153 - HO2S Insufficient Switching Bank 2 Sensor 1
P1154 - HO2S Transition Time Ratio Bank 2 Sensor 1
P1161 - Heater Bank 1 Sensor 2
P1171 - Fuel System Lean During Acceleration
P1187 - Engine Oil Temperature Sensor Voltage Low 
P1188 - Engine Oil Temperature Sensor Voltage High
P1189 - Engine Oil Pressure Switch
P1191 - Intake Air Duct Leak
P1200 - Injector Control
P1214 - Injection Pump Timing Offset
P1216 - Fuel Solenoid Response Time Too Short
P1217 - Fuel Solenoid Response Time Too Long
P1218 - Injection Pump Calibration
P1220 - TP Sensor 2
P1221 - TP Sensor 1, 2 Performance
P1222 - Injector Control Intermittent
P1250 - EFE Heater
P1257 - Supercharger System Overboost
P1258 - Engine Metal Over Temperature Protection, Fuel Disabled
P1271 - APP Sensor No. 1-2
P1275 - Boost Control Condition (Ex. Corvette) APP Sensor 1 (97-02 Corvette and Catera)
P1276 - APP Sensor 1 Performance
P1280 - APP Sensor 2
P1281 - APP Sensor 2 Performance
P1285 - APP Sensor 3
P1286 - APP Sensor 3 Performance
P1300 - Ignition Control Module
P1320 - ICM 4X Reference Too Many Pulses or Intermittent No Pulses
P1323 - ICM 24X Reference Low Frequency
P1336 - CKP System Variation Not Learned
P1345 - CKP Sensor/CMP Correlation
P1350 - Ignition Control System
P1351 - Ignition Control Voltage High or IC 1 High Voltage
P1352 - Bypass Open Or Voltage High or IC 2 High Voltage
P1353 - IC 3 High Voltage
P1354 - IC 4 High Voltage
P1355 - IC 5 High Voltage
P1356 - IC 6 High Voltage
P1359 - Ignition Coil Group 1 Control
P1360 - Ignition Coil Group 2 Control
P1361 - IC Not Toggling Ignition Control Voltage Low or IC 1 Low Voltage
P1362 - Bypass Shorted Or Low Voltage or IC 2 Low Voltage
P1363 - IC 3 Low Voltage
P1364 - IC 4 Low Voltage
P1365 - IC 5 Low Voltage
P1366 - IC 6 Low Voltage
P1370 - ICM 4X Reference Too Many Pulses
P1371 - ICM 4X Reference Too Few Pulses or Distributor Ignition Low Resolution
P1372 - IC System Occasional Resync
P1374 - 3X Reference
P1375 - ICM 24X Reference Voltage Too High
P1376 - Ignition Ground
P1377 - IC Cam Pulse To 4X Reference Pulse Comparison
P1380 - ABS/EBCM/EBCM DTC Detected/Rough Road Data Unusable
P1361 - Misfire Detected No EBCM/EB(T)CM/PCM Serial Data
P1403 - EGR Error
P1404 - EGR Valve Closed Pintle Position, EGR Valve Stuck Or Performance
P1405 - EGR Error
P1406 - EGR Valve Pintle Position
P1408 - MAP Sensor
P1409 - EGR Vacuum System Leak
P1410 - Fuel Tank Pressure System
P1415 - AIR System Bank 1
P1416 - AIR System Bank 2
P1431 - Fuel Level Sensor 2 Performance
P1432 - Fuel Level Sensor 2 Voltage Low
P1433 - Fuel Level Sensor 2 Voltage High
P1441 - EVAP System Flow During Non-Purge
P1442 - EVAP Vacuum Switch
P1450 - BARD Sensor
P1451 - BARO Sensor
P1460 - Cooling Fan (Ex.Catera). Misfire Detected With Low Fuel (Catera)
P1483 - Engine Cooling System Performance
P1500 - Starter Signal
P1501 - Theft Deterrent System
P1502 - Theft Deterrent System No Password Received
P1503 - Theft Deterrent System Password Improper
P1508 - IAC System Low RPM
P1509 - IAC System High RPM
P1510 - Back-Up Power Supply for Throttle Control System
P1511 - Throttle Control System, Backup System Performance
P1514 - TAC System MAF Performance
P1515 - Command vs. Actual Throttle Position Performance
P1516 - Command vs. Actual Throttle Position Performance
P1517 - TAC Module Processor
P1518 - PCM To TAC Module Serial Data
P1519 - TAC Module Internal
P1520 - Park/Neutral Position Switch Gear Indicator System
P1523 - TAC Return Performance
P1524 - TP Sensor Learned Closed Throttle Angle Degrees Out Of Range
P1526 - TP Sensor Learn Not Completed
P1527 - Trans Range/Pressure Switch Comparison
P1530 - Ignition Timing Adj. Switch, A/C Refrigerant Pressure Sensor
P1532 - A/C Evaporator Temperature Voltage Low
P1533 - A/C Low Side Temperature Sensor
P1535 - A/C High Side Temperature Sensor
P1536 - A/C System ECT Over Temperature
P1537 - A/C Request Voltage Low
P1538 - A/C Request Voltage High
P1539 - A/C High Pressure Switch Voltage High
P1540 - A/C System High Pressure
P1542 - A/C System High Pressure/High Temperature
P1543 - A/C System Performance
P1545 - A/C Clutch Relay Control
P1546 - A/C Clutch Relay Control Voltage Low
P1550 - Stepper Motor Speed Control
P1554 - Speed Control Status
P1558 - Speed Control (SPS Low)
P1560 - Speed Control System/Transaxle Not In Drive
P1561 - Speed Control Vent Solenoid
P1562 - Speed Control Vacuum Solenoid
P1564 - Speed Control System/Vehicle Acceleration Too High
P1565 - Speed Control Servo Position Sensor
P1566 - Speed Control System/Engine RPM Too High
P1567 - Speed Control Switches/ABCS Active
P1568 - Speed Control (SPS High)
P1570 - Speed Control System/Traction Control Active
P1571 - TCS Desired Torque/Traction Control System PWM No Frequency
P1572 - Traction Control System Active Voltage Low Too Long
P1573 - PCM/EBTCM Serial Data or Engine Hot Lamp Control
P1574 - EBTCM System/Stop Lamp 2 Voltage High or Stop Lamp Control (Corvette)
P1575 - Extended Travel Brake Switch Voltage High
P1576 - Brake Booster Vacuum Sensor Voltage High
P1577 - Brake Booster Vacuum Sensor Voltage Low
P1578 - Brake Booster Vacuum Sensor Low Vacuum
P1579 - Park/Neutral To Drive/Reverse At High Throttle Angle
P1585 - Cruise Control Inhibit Control
P1599 - Engine Stall Or Near Stall Detected
P1600 - PCM Battery or Serial Communication Between PCM and TCM
P1601 - Loss Of Serial Communication
P1602 - Loss Of EBC/EBTCM Serial Data, KS Module (Catera)
P1603 - Loss Of SDM Serial Data
P1604 - Loss Of IPC Serial Data
P1605 - Loss Of HVAC Serial Data
P1610 - Loss Of Serial Data, Failure With Body module CKT
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
P1619 - Engine Oil Life Monitor Reset
P1621 - PCM Memory Performance, VCM EEPROM Performance
P1623 - PROM Error
P1624 - Customer Snapshot Requested, Data Available
P1626 - Theft Deterrent System Fuel Enable
P1627 - A/D Performance
P1629 - Theft Deterrent System Fuel Enable Improper Signal
P1630 - Theft Deterrent System/PCM/VCM In Learn Mode
P1631 - Theft Deterrent System Password Improper
P1632 - Theft Deterrent System Fuel Disabled
P1633 - Ignition Supplemental Power Voltage Low
P1634 - Ignition 1 Power Voltage Low
P1635 - 5 Volt Reference (A Or 1 )
P1637 - Alternator L Terminal
P1638 - Alternator F Terminal
P1639 - 5 Volt Reference (B Or 2)
P1640 - Driver 1 Input Voltage High
P1641 - MIL Control or Fan Control Relay 1 Control Circuit
P1642 - Vehicle Speed Output or Fan Control Relay 2 and 3 Control
P1643 - Fuel Pump PWM Control
P1644 - Delivered Torque Output
P1645 - Boost Control Solenoid or EVAP Solenoid Output
P1646 - Boost Control Solenoid Control or EVAP Vent Valve Output
P1650 - Driver 2 Input Voltage High
P1651 - Fan 1 Relay Control
P1652 - Fan 2 Relay Control
P1653 - TCS Delivered Torque Control, Oil Level Lamp, EGR Vent Solenoid Control
P1654 - A/C Relay Control
P1655 - EVAP Purge Solenoid Control or EGR Solenoid Control (1999-up)
P1656 - Wastegate Solenoid Control
P1657 - Skip Shift 1-4 Upshift
P1660 - Cooling Fan Control
P1661 - MIL Control
P1662 - Speed Control Inhibit Control
P1663 - Alternator Lamp Control
P1664 - Skip Shift 1-4 Upshift Lamp Control
P1665 - EBCM/EBTCM Serial Data (1996-97), EVAP Vent Valve Control (98-up)
P1667 - Reverse Inhibitor Solenoid Control or Fuel Pump Speed Control (98-up
P1670 - QDM 4 (Quad Driver Transistor)
P1671 - MIL Control or Oil Change Lamp Control
P1672 - Low Engine Oil Level Lamp
P1673 - Engine Hot Lamp Control
P1674 - Tachometer Control
P1675 - EVAP Vent Solenoid Control
P1676 - EVAP Canister Purge Solenoid Control
P1689 - TCS Delivered Torque Control
P1700 - MIL Requested By TCM
P1701 - MIL Request
P1740 - Torque Management Request, Transmission and Traction Control
P1810 - ATF Pressure Manual Valve Position Switch
P1811 - Long Shift and Max Adapt
P1812 - TOT Condition
P1814 - Torque Converter Overstress
P1820 - Internal Mode Switch A Low
P1822 - Internal Mode Switch B High
P1823 - Internal Mode Switch P Low
P1825 - Internal Mode Switch-Invalid Range
P1826 - Internal Mode Switch C High
P1845 - Torque Limit Management
P1660 - TCC PWM Solenoid
P1864 - TCC Enable Solenoid
P1870 - Trans Component Slipping
P1887 - TCC Release Switch Fault
U1000 - No Class 2 Communication ID Not Learned
U1016 - Serial Communication Fault
U1026 - Loss Of Active Transfer Case Control Module Communications
U1040 - Loss Of ECBM Communication (ABS)
U1041 - Loss Of Vehicle Theft Deterrent Communication or Loss Of ECBM Communication
U1056 - Loss Of Communication With RTD
U1064 - Loss Of BCM, BFC and General Loss Of Serial Data Line Class 2 Communication
U1088 - Loss Of SDM
U1096 - Loss Of PC Data Line Class 2 Communication or loss of IPC
U1128 - Loss Of Communication With IRC or Radio
U1152 - Loss Of Data HCM
U1153 - Loss Of Communication w/HVAC
U1160 - Loss Of Communication With left door control module
U1161 - Loss Of Right hand Front Door Module Bus Serial Data
U1162 - Loss Of Left hand Rear Door Module Bus Serial Data
U1163 - Loss Of Right hand Rear Door Module Bus Serial Data
U1166 - Loss Of Communication With SCM
U1169 - Loss Of Communication w/MMM
U1170 - Loss Of Left hand Front (driver's) Door Switch Assembly Bus Serial Data
U1176 - Loss Of Communication With RFA
U1192 - Loss Of Vehicle Theft Deterrent Electronic Variable Communication
U1193 - Loss Ot Vehicle Immobilizer Module Communication
U1255 - Serial Data Line Class 2 Initialization Error
U1300 - Class 2 Communications Circuit Low Voltage or short to ground
U1301 - Class 2 Communications Circuit High Voltage or short to power
U2150 - Serial Data
U2151 - Serial Data
U2153 - Internal Fault