Cadillac check engine list / fault code / trouble code

When retrieving Cadillac trouble codes with an OBD II scan tool, proceed as follows:
1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover.
2. Turn the ignition on.
3. Follow scan tool manufacturers operating instructions to access the Diagnostic Trouble Codes (DTC's).
Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Cadillac diagnostic trouble codes

Manufacturer Specific Codes
P1031 HO2S Heater Current Monitor Control Circuit Sensors 1
P1032 HO2S Heater Warm Up Control Circuit Sensors 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1105 Secondary Vacuum Sensor Circuit
P1106 MAP Sensor Circuit Intermittent High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1107 MAP Sensor Circuit Intermittent Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1108 BARO To MAP Sensor Circuit Comparison Too High
P1109 Secondary Port Throttle System
P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1112 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1113 Intake Resonance Switchover Valve Circuit
P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1116 ECT Signal Unstable Or Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1117 Engine Coolant Temp Signal Out-Of-Range Low
P1118 Engine Coolant Temp Signal Out-Of Range High
P1119 ECT Signal Out Of Rage With TFT Sensor
P1120 Throttle Position (TP) Sensor 1 Circuit
P1121 TP Sensor Circuit Intermittent High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1122 TP Sensor Circuit Intermittent Low Voltage - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Trouble Code
P1125 Accelerator Pedal Position (APP) System
P1130 HO2S Circuit Low Variance Bank 1 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1131 HO2S Circuit Low Variance Bank 1 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1132 H02S Circuit Low Variance Bank 2 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1133 HO2S Insufficient Switching - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1134 HO2S Transition Time Ratio - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1135 HO2S Lean Average Bank 1 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1136 HO2S Rich Average Bank 1 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1137 HO2S Bank 1 Sensor 2 Lean Or Low Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1138 HO2S Bank 1 Sensor 2 Rich Or High Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1139 HO2S Insufficient Switching Bank 1 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1140 HO2S Transition Time Ratio Bank 1 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1141 HO2S Bank 1 Sensor 2 Average Voltage Level - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code

P1143 HO2S Bank 1 Sensor 3 Lean Or Low Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1144 HO2S Bank 1 Sensor 3 Rich Or High Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1145 HO2S Cross Counts Bank 1 Sensor 3 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1153 HO2S Insufficient Switching - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1154 HO2S Transition Time Ratio - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1155 HO2S Lean Average Bank 2 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1156 HO2S Rich Average Bank 2 Sensor 1 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1157 HO2S Bank 2 Sensor 2 Lean System Or Low Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1158 HO2S Bank 2 Sensor 2 Rich Or High Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1159 HO2S Cross Counts Bank 2 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1161 HO2S Heater Power Stage Circuit Bank 2 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1163 HO2S Bank 2 Sensor 3 Lean System Or Low Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1164 HO2S Bank 2 Sensor 3 Rich Or High Voltage - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Check Engine Light Code
P1165 HO2S Cross Counts Bank 2 Sensor 2 - Read Our Article On Oxygen Sensor Codes For Help With This Cadillac Trouble Code
P1170 Bank To Bank Fuel Trim Offset
P1171 Fuel System Lean During Acceleration
P1185 Engine Oil Temperature Circuit
P1186 EOT Circuit Performance

P1187 EOT Sensor Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1188 EOT Sensor Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1189 Engine Oil Pressure Switch Circuit
P1190 Engine Vacuum Leak
P1191 Intake Air Duct Air Leak
P1200 Injector Control Circuit
P1201 (Alternative Fuel) Gas Mass Sensor Circuit Range/Performance
P1202 (AlternativeFuel) Gas Mass Sensor Circuit Low Frequency
P1203 (Alternative Fuel) Gas Mass Sensor Circuit High Frequency
P1211 Mass Air Flow Circuit Intermittent High - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1212 Mass Air Flow Circuit Intermittent Low - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1214 Injection Pump Timing Offset
P1215 Ground Fault Detection Indicated
P1216 Fuel Solenoid Response Time Too Short
P1217 Fuel Solenoid Response Time Too Long
P1218 Injection Pump Calibration Circuit
P1219 Throttle Position Sensor Refernce Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1220 Throttle Position (TP) Sensor 2 Circuit
P1221 Throttle Position (TP) Sensor 1- 2 Correlation
P1222 Injector Control Circuit Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1225 Injector Circuit Cylinder 2 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1228 Injector Circuit Cylinder 3 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1231 Injector Circuit Cylinder 4 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1234 Injector Circuit Cylinder 5 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1237 Injector Circuit Cylinder 6 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1240 Injector Circuit Cyllinder 7 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1243 Injector Circuit Cylinder 8 Intermittent - Read Our Article on Intermittent Diagnosis For Help With This Cadillac Check Engine Light Code
P1245 Intake Plenum Switchover Valve
P1250 Early Fuel Evaporation Heater Circuit
P1257 Supercharger System Overboost
P1258 Engine Coolant Overtemperature - Protection Mode Active
P1260 Last Test Failed SCC Or Theft Detected, Vehicle Immobilized
P1270 Accelerator Pedal Position Sensor A/D Converter Error
P1271 APP Sensor 1-2 Performance
P1272 Accelerator Pedal Position Sensor 2
P1273 Accelerator Pedal Position Sensor 1
P1274 Injectors Wired Incorrectly
P1275 Accelerator Pedal Position (APP) Sensor 1 Circuit - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1276 Accelerator Pedal Position (APP) Sensor 1 Performance
P1277 Accelerator Pedal Position Sensor 1 Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1278 Accelerator Pedal Position Sensor 1 Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1280 Accelerator Pedal Position (APP) Sensor 2 Circuit - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1281 Accelerator Pedal Position (APP) Sensor 2 Performance

P1282 Accelerator Pedal Position Sensor 2 Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1283 Accelerator Pedal Position Sensor 2 Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1285 Accelerator Pedal Position (APP) Sensor 3 Circuit - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1286 Accelerator Pedal Position (APP) Sensor 3 Performance
P1287 Accelerator Pedal Position Sensor 3 Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1288 Accelerator Pedal Position Sensor 3 Circuit High Voltage< - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light CodeBR>
P1300 Ignitor Circuit - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1305 Ignition Coil 2 Primary Feedback Circuit
P1310 Ignition Coil 3 Primary Feedback Circuit
P1315 Ignition Coil 4 Primary Feedback Circuit
P1320 IC Module 4X Ref Circuit Intermittent, No Pulses
P1321 Electronic Ignition System Fault Line
P1322 EI System Or Ignition Control Missing
P1323 24X Reference Circuit Low Frequency
P1324 Crank RPM Too Low
P1335 CKP Circuit
P1336 Crankshaft Position (CKP) System Variation Not Learned
P1345 CKP/CMP Correlation
P1346 Intake Camshaft Position (CMP) Sensor System Performance
P1350 Ignition Contol System
P1351 IC Circuit High Voltage
P1352 IC Output High/Pulse Detected When Grounded Cyl.2
P1353 IC Output High/Pulse Detected When Grounded Cyl.3

P1354 IC Output High/Pulse Detected When Grounded Cyl.4
P1355 IC OUtput High/Pulse Detected When Grounded Cyl.5
P1356 IC Output High/Pulse Detected When Grounded Cyl.6
P1357 IC Output High/Pulse Detected When Grounded Cyl.7
P1358 IC Output High/Pulse Detected When Grounded Cyl.8
P1359 Ignition Control Circuit Group A
P1360 Ignition Control Circuit Group B
P1361 IC Circuit Low Voltage
P1362 IC Cylinder 2 Not Toggling After Enable
P1363 IC Cylinder 3 Not Toggling After Enable
P1364 IC Cylinder 4 Not Toggling After Enable
P1365 IC Cylinder 5 Not Toggling After Enable
P1366 IC Cylinder 6 Not Toggling AFter Enable
P1367 IC Cylinder 7 Not Toggling After Enable
P1368 IC Cylinder 8 Not Toggling After Enable
P1370 IC Module 4X Reference Circuit, Too Many Pulses
P1371 DI Low Resolution Circuit
P1372 Crankshaft Position Sensor Circuit Performance
P1374 3X Reference Circuit
P1375 24X Reference Circuit High Voltage
P1376 Ignition Ground Circuit
P1377 IC Module CAM Pulse To 4X Reference Pulse Comparison
P1380 Misfire Detected - Rough Road Data Not Available
P1381 Misfire Detected - No Communication with Brake Control Module
P1390 Wheel Speed Sensor 1, G-Sensor Circuit
P1391 Wheel Speed Sensor 1, G-Sensor Circuit Performance
P1392 Wheel Speed Sensor 1, G-Sensor Circuit Low Voltage

P1393 Wheel Speed Sensor 1, G-Sensor Circuit High Voltage
P1394 Wheel Speed Sensor 1, G-Sensor Circuit Intermittent
P1395 Wheel Speed Sensor 2, G-Sensor Circuit
P1396 Wheel Speed Sensor 2, G-Sensor Circuit Performance
P1397 Wheel Speed Sensor 2, G-Sensor Circuit Low Voltage
P1398 Wheel Speed Sensor 2, G-Sensor Circuit High Voltage
P1399 Wheel Speed Sensor 2, G-Sensor Circuit Intermittent
P1403 Exhaust Gas Recirculation System Valve 1 - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1404 Exhaust Gas Recirculation System Valve 2 - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1405 Exhaust Gas Recirculation System Valve 3 - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1406 EGR Valve Pintle Position Circuit - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1407 EGR Air Intrusion In Exhaust Supply To EGR Valve - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1408 Intake Manifold Pressure Sensor Circuit
P1409 EGR Vacuum System Leak - Read Our Article on EGR Valve Codes For Help With This Cadillac Check Engine Light Code
P1410 Fuel Tank Pressure System
P1415 Secondary Air Injection (AIR) System
P1416 AIR System Bank 1
P1418 Secondary Air Injection System Relay A Control Circuit High
P1420 Intake Air Low Pressure Switch Circuit Low Voltage
P1421 Intake Air Low Pressure Switch Circuit High Voltage
P1423 Intake Air High Pressure Switch Circuit High Voltage
P1431 Fuel Level Sensor 2 Performance
P1432 Fuel Level Sensor 2 Circuit Low Voltage

P1433 Fuel Level Sensor 2 Circuit High Voltage
P1441 Evaporative Emission (EVAP) System Flow During Non-Purge
P1442 EVAP Vacuum Switch High Voltage During Ignition On
P1450 Barometric Pressure Sensor Circuit
P1451 Barometric Pressure Sensor Performance
P1460 Cooling Fan Control System
P1480 Cooling Fan 1 Control Circuit High
P1483 Engine Coolilng System Performance
P1500 Starter Signal Circuit
P1501 Vehicle Speed Sensor Circuit Intermittent
P1502 Theft Deterrent System - No Password Received
P1503 Theft Deterrent System - Password Incorrect
P1504 Vehicle Speed Output Circuit
P1508 IAC System Low RPM
P1509 IAC System High RPM
P1510 Back UP Power Supply
P1511 Throttle Control System-Backup System Performance
P1514 Throttle Body Performance
P1515 Control Module Throttle Actuator Position Performance
P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
P1517 Throttle Actuator Control (TAC) Module Performance
P1518 Throttle Actuator Control (TAC) Module Serial Data Circuit
P1519 Electronic Throttle Module Low Volts Communication Disable
P1520 Gear Indicator System
P1521 Transmission Engaged At High Throttle Angle
P1522 Park/Neutral To Drive/Reverse At High RPM
P1523 Electronic Throttle Control Throttle Return

P1524 TP Sensor Learned CI, Throttle Angle Out Of Range
P1525 Throttle Body Service Required
P1526 TP Sensor Learn Not Complete
P1527 Transmission Range/Pressure Switch Comparison
P1528 Governor
P1529 Heated Windshield Request Problem
P1530 Ignition Timing Adjustment Switch Circuit
P1531 A/C Low Side Temerature Sensor Fault
P1532 A/C Evaporator Temperature Sensor Circuit Low Voltage
P1533 A/C Evaporator Temperature Sensor Circuit High Voltage
P1534 A/C High Side Temperature Sensor Low Voltage
P1535 A/C High Side Temperature Sensor Circuit
P1536 A/C System - ECT Overtemperature
P1537 A/C Request Circuit Low Voltage
P1538 A/C request Circuit High Voltage
P1539 Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
P1540 A/C System High Pressure
P1541 A/C High Side Over Temperature
P1542 A/C System High Pressure High Temperature
P1543 A/C System Performance
P1544 A/C Refrigerant Condition Very Low
P1545 A/C Clutch Relay Control Circuit
P1546 Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage
P1547 A/C System Performance Degraded
P1548 A/C Recirculation Circuit
P1554 Cruise Engaged Circuit High Voltage
P1555 Electronic Variable Orifice Output

P1558 Cruise Control Servo Indicates Low
P1559 Cruise Control Power Mangement Mode
P1560 Cruise Control System-Transaxle Not In Drive
P1561 Cruise Vent Solenoid
P1562 Cruise Vacuum Solenoid
P1563 Cruise Vehicle Speed/Set Speed Difference Too High
P1564 Cruise Control System - Vehicle Accel Too High
P1565 Cruise Servo Position Sensor
P1566 Cruise Control System-Engine RPM Too High
P1567 Cruise Control System-Active Braking Control Active
P1568 Cruise Servo Stroke Greater Than Commanded In Cruise
P1569 Cruise Servo Stroke High While Not In Cruise
P1570 Cruise Control System-Traction Control Active
P1571 TCS PWM Circuit No Frequency
P1572 ASR Active Circuit Low Too Long
P1573 PCM/EBTCM Serial Data Circuit
P1574 Stoplamp Switch Circuit
P1575 Extended Travel Brake Switch Circuit
P1576 BBV Sensor Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1577 BBV Sensor Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1578 BBV Sensor Circuit Low Vacuum
P1579 P/N To D/R At High Throttle Angle
P1580 Cruise Move Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1581 Cruise Move Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code

P1582 Cruise Direction Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Trouble Code
P1583 Cruise Direction Circuit High Volume
P1584 Cruise Control Disabled
P1585 Cruise Inhibit Control Circuit
P1586 Cruise Control Brake Switch 2 Circuit
P1587 Cruise Control Clutch Control Circuit Low
P1588 Cruise Control Clutch Control Circuit High
P1599 Engine Stall Or Near Stall Detected
P1600 PCM Battery
P1601 Serial Communication Problem With Devise 1
P1602 Loss Of EBTCM Serial Data
P1603 Loss Of SDM Serial Data
P1604 Loss Of IPC Serial Data
P1605 Loss OF HVAX Serial Data
P1606 Serial Communication Problem With Device 6
P1607 Serial Communication Problem With Devise 7
P1608 Serial Communication Problem With Device 8
P1609 Loss Of TCS Serial Data
P1610 Loss Of PZM Serial Data
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 Coolant Circuit
P1621 PCM Memory Performance
P1622 Cylinder Select
P1623 Transmission Temp Pull-Up Resistor
P1624 Customer Snapshot Data Available
P1625 PCM System Reset
P1626 Theft Deterrent Fuel Enable Signal Lost
P1627 A/D Performance
P1628 ECT Pull-Up Resistor
P1629 Theft Deterrent System-Cranking Signal
P1630 Theft Deterrent Learn Mode Active
P1631 Theft Deterrent Start Enable Signal Not Correct
P1632 Theft Deterrent System-Fuel Disabled
P1633 Ignition Supply Power Circuit Low Voltage
P1634 Ignition 1 Power Circuit Low Voltage
P1635 5 Volt Reference 1 Circuit
P1636 PCM Stack Overrun
P1637 Generator L-Terminal Circuit
P1638 Generator F-Terminal Circuit
P1639 5 Volt Reference 2 Circuit
P1640 Driver 1-Input High Voltage
P1641 FC Relay 1 Control Circuit
P1642 FC Relay 2 And 3 Control Circuit
P1643 Engine Speed Output Circuit
P1644 TP Output Circuit
P1645 EVAP Solenoid Output Circuit
P1646 Driver 1 Line 6
P1647 Driver 1 Line 7
P1650 Driver 2-Input High Voltage
P1651 Fan 1 Relay Control Circuit
P1652 Powertrain Induced Chassis Pitch Output Circuit
P1653 Oil Level Lamp Control Circuit
P1654 Service Throttle Soon Lamp Control Circuit
P1655 EVAP Purge Solenoid Control Circuit
P1656 Driver 2 Line 6
P1657 1-4 Upshift Solenoid Control Circuit
P1658 Starter Enable Relay Control Circuit
P1660 Cooling Fans Control Circuit
P1661 MIL Control Circuit
P1662 Cruise Control Inhibit Control Circuit
P1663 Oil Life Lamp Control Circuit
P1664 1-4 Upshift Lamp Control Circuit
P1665 Driver 3 Line 5
P1666 Driver 3 Line 6
P1667 Reverse Inhibit Solenoid Control Circuit
P1669 ABS Unit Expected
P1670 Driver 4
P1671 Driver 4 Line 1
P1672 Low Engine Oil Level Lamp Control Circuit
P1673 Engine Hot Lamp Control Circuit
P1674 Tachometer Control Circuit
P1675 EVAP Vent Solenoid Control Circuit
P1676 Driver 4 Line 6
P1677 Driver 4 Line 7
P1680 Driver 5
P1681 Driver 5 Line 1
P1682 Driver 5 Line 2
P1683 Driver 5 Line 3
P1684 Driver 5 Line 4
P1685 Driver 5 Line 5
P1686 Driver 5 Line 6
P1687 Driver 5 Line 7
P1689 Delivered Torque Circuit Fault
P1690 ECM Loop Overrun
P1691 Coolant Gage Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1692 Coolant Gage Circuit High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1693 Tachometer Circuit Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1694 Tachometer Circuit High Voltag - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Codee
P1695 Remote Keyless Entry Circuit Low
P1696 Remote Keyless Entry Voltage High
P1700 Transmission MIL Request
P1701 Transmission MIL Request Circuit
P1705 P/N Signal Output Circuit
P1740 Transmission Torque Reduction Request Circuit
P1743 TP Signal From ECM
P1760 ECM Supply Voltage Interrupted
P1779 Engine Torque Delivered To TCM Signal
P1780 Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
P1790 Transmission Control Module Checksum
P1791 Transmission Control Module Loop

P1792 Transmission Control Module Reprogrammable Memory
P1793 Transmission control Module Stack Overrun
P1795 CAN Bus-Throttle Body Position
P1800 TCM Power Control Relay Circuit Open
P1801 Performance Selector Switch Failure
P1804 Ground Control Relay
P1810 TFP Valve Position Switch Circuit
P1811 Maximum Adapt And Long Shift
P1812 Transmission Over Temperature Condition
P1813 Torque Control
P1814 Torque Converter Overstressed
P1815 Transmission Range Switch-Start In Wrong Range
P1816 TFP Valve Position Switch-Park/Neutral With Drive Ratio
P1817 TFP Valve Position Switch-Reverse With Drive Ratio
P1818 TFP Valve Position Switch-Drive Without Drive Ratio
P1819 Internal Mode Swtich No Start, Wrong Range
P1820 Internal Mode Switch Circuit A Low
P1822 Internal Mode Switch Circuit B High
P1823 Internal Mode Switch Circuit P Low
P1825 Internal Mode Switch Illegal Range
P1826 Internal Mode Switch Circuit C High
P1831 PC Solenoid Power Circuit Low Voltage
P1833 A/T Solenoids Power Circuit Low Voltage
P1835 Kick-Down Switch
P1836 Kick-Down Switch Failed Open
P1837 Kick-Down Switch Failed Short
P1842 1-2 Shift Solenoid Circuit Low Voltage

P1843 1-2 Shift Solenoid Circuit High Voltage
P1844 Torque Reduction Signal Circuit Desired By TCM
P1845 Transmission Gear Ratio Output Circuit
P1847 2-3 Shift Solenoid Circuit High Voltage
P1850 Brake Band Apply Solenoid Circuit
P1851 Brake Band Apply Solenoid Performance
P1852 Brake Band Apply Solenoid Low Voltage
P1853 Brake Band Apply Solenoid High Voltage
P1860 TCC PWM Solenoid Circuit Electrical
P1864 Torque Converter Clutch Circuit
P1868 Transmission Fluid Life
P1870 Transmission Component Slipping
P1871 Undefined Gear Ratio
P1873 TCC Stator Temp. Switch Circuit Low
P1874 TCC Stator Temp. Switch Circuit High
P1875 4WD Low Switch Circuit
P1884 TCC Enable/Shift Light Circuit
P1886 Shift Timing Solenoid
P1887 TCC Release Switch Circuit
P1890 ECM Data Input Circuit
P1891 Throttle Position Sensor PWM Signal Low
P1892 Throttle Position Sensor PWM Signal High
P1893 Engine Torque Signal Low Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1894 Engine Torque Signal High Voltage - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code
P1895 TCM To ECM Torque Reduction Circuit - Read Our Article on Automotive Circuit Testing For Help With This Cadillac Check Engine Light Code

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