As of my last update in September 2021, Cadillac vehicles also use a set of diagnostic trouble codes (DTCs) to identify potential issues with various systems in the car. Cadillac, as a luxury car manufacturer, typically uses advanced diagnostic systems. The specific codes can vary based on the Cadillac model, year, and the type of diagnostic system used. Here are some common Cadillac diagnostic trouble codes:
1. P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem
2. P0171 - System Too Lean (Bank 1)
3. P0172 - System Too Rich (Bank 1)
4. P0300 - Random/Multiple Cylinder Misfire Detected
5. P0301 - Cylinder 1 Misfire Detected
6. P0302 - Cylinder 2 Misfire Detected
7. P0303 - Cylinder 3 Misfire Detected
8. P0304 - Cylinder 4 Misfire Detected
9. P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
10. P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
11. P0442 - Evaporative Emission System Leak Detected (Small Leak)
12. P0455 - Evaporative Emission System Leak Detected (Gross Leak)
13. P0507 - Idle Control System RPM Higher Than Expected
14. P1101 - Intake Air Flow System Performance
15. P1104 - Mass Airflow (MAF) Sensor Ground Circuit
16. P1111 - Intake Air Temperature (IAT) Sensor Performance
17. P1114 - Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage
18. P1115 - Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
19. P1120 - Throttle Position Sensor (TPS) Circuit Intermittent High Voltage
20. P1121 - Throttle Position Sensor (TPS) Circuit Intermittent Low Voltage
21. P1122 - Throttle Position Sensor (TPS) Circuit Intermittent Signal Low
22. P1125 - Throttle Position Sensor (TPS) Circuit Intermittent Signal High
23. P1126 - Magnetic Clutch Control Circuit Intermittent High Voltage
24. P1127 - Exhaust Gas Recirculation (EGR) System Intermittent
25. P1128 - Closed Loop Fueling Not Achieved Bank 1
26. P1129 - Closed Loop Fueling Not Achieved Bank 2
27. P1137 - Oxygen Sensor System Monitor Bank 1 Sensor 2
28. P1138 - Oxygen Sensor System Monitor Bank 2 Sensor 2
29. P1220 - Throttle Position Sensor (TPS) Circuit 2
30. P1221 - Throttle Position Sensor (TPS) Circuit 1
Please note that the specific diagnostic trouble codes can vary based on the Cadillac model and the software version of the diagnostic system used. If you encounter any of these diagnostic codes on your Cadillac vehicle, it is recommended to have a qualified mechanic or Cadillac dealership diagnose and address the specific issue. Using professional diagnostic equipment ensures accurate readings and appropriate repairs.
