Tuesday, 25 March 2025


Here is a list of 50 common P diagnostic trouble codes (DTCs) 

1. P0100 - Mass or Volume Air Flow Circuit Malfunction
2. P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem
3. P0102 - Mass or Volume Air Flow Circuit Low Input
4. P0103 - Mass or Volume Air Flow Circuit High Input
5. P0110 - Intake Air Temperature Circuit Malfunction
6. P0113 - Intake Air Temperature Circuit High Input
7. P0115 - Engine Coolant Temperature Circuit Malfunction
8. P0120 - Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction
9. P0121 - Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
10. P0122 - Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input
11. P0123 - Throttle/Pedal Position Sensor/Switch "A" Circuit High Input
12. P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
13. P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
14. P0136 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
15. P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
16. P0171 - System Too Lean (Bank 1)
17. P0172 - System Too Rich (Bank 1)
18. P0201 - Injector Circuit/Open - Cylinder 1
19. P0202 - Injector Circuit/Open - Cylinder 2
20. P0300 - Random/Multiple Cylinder Misfire Detected
21. P0301 - Cylinder 1 Misfire Detected
22. P0302 - Cylinder 2 Misfire Detected
23. P0320 - Ignition/Distributor Engine Speed Input Circuit Malfunction
24. P0325 - Knock Sensor 1 Circuit Malfunction
25. P0330 - Knock Sensor 2 Circuit Malfunction
26. P0340 - Camshaft Position Sensor "A" Circuit Malfunction
27. P0401 - Exhaust Gas Recirculation Flow Insufficient Detected
28. P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
29. P0442 - Evaporative Emission System Leak Detected (Small Leak)
30. P0446 - Evaporative Emission System Vent Control Circuit Malfunction
31. P0455 - Evaporative Emission System Leak Detected (Large Leak)
32. P0500 - Vehicle Speed Sensor Malfunction
33. P0505 - Idle Control System Malfunction
34. P0562 - System Voltage Low
35. P0601 - Internal Control Module Memory Checksum Error
36. P0700 - Transmission Control System Malfunction
37. P0715 - Input/Turbine Speed Sensor Circuit Malfunction
38. P0720 - Output Speed Sensor Circuit Malfunction
39. P0730 - Incorrect Gear Ratio
40. P0740 - Torque Converter Clutch Circuit Malfunction
41. P0750 - Shift Solenoid "A" Malfunction
42. P0755 - Shift Solenoid "B" Malfunction
43. P0760 - Shift Solenoid "C" Malfunction
44. P0770 - Shift Solenoid "E" Malfunction
45. P1101 - Mass Air Flow Sensor Out of Self-Test Range
46. P1131 - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 1
47. P1132 - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1
48. P1133 - Upstream Heated Oxygen Sensor Signal Circuit Malfunction - Bank 1
49. P1134 - Upstream Heated Oxygen Sensor Signal Circuit Range/Performance - Bank 1
50. P1135 - Upstream Heated Oxygen Sensor Signal Circuit Low Voltage - Bank 1 
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