Diagnostic Trouble Codes (DTC) that BMW owners may encounter. Please note that the frequency of specific codes can vary over time, and the following list is not exhaustive:
1. P0300 - Random/Multiple Cylinder Misfire Detected
2. P0171 - System Too Lean (Bank 1)
3. P0174 - System Too Lean (Bank 2)
4. P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
5. P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
6. P0455 - Evaporative Emission System Leak Detected (Large Leak)
7. P0442 - Evaporative Emission System Leak Detected (Small Leak)
8. P0301 - Cylinder 1 Misfire Detected
9. P0302 - Cylinder 2 Misfire Detected
10. P0303 - Cylinder 3 Misfire Detected
11. P0304 - Cylinder 4 Misfire Detected
12. P0305 - Cylinder 5 Misfire Detected
13. P0306 - Cylinder 6 Misfire Detected
14. P0307 - Cylinder 7 Misfire Detected
15. P0308 - Cylinder 8 Misfire Detected
16. P2187 - System Too Lean at Idle (Bank 1)
17. P2189 - System Too Lean at Idle (Bank 2)
18. P0012 - "A" Camshaft Position - Timing Over-Retarded (Bank 1)
19. P0015 - "B" Camshaft Position - Timing Over-Retarded (Bank 1)
20. P0016 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
21. P0017 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
22. P0019 - Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
23. P0020 - "A" Camshaft Position - Actuator Circuit (Bank 2)
24. P0022 - "A" Camshaft Position - Timing Over-Retarded (Bank 2)
25. P0030 - HO2S Heater Control Circuit (Bank 1 Sensor 1)
26. P0031 - HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
27. P0032 - HO2S Heater Control Circuit High (Bank 1 Sensor 1)
28. P0050 - HO2S Heater Control Circuit (Bank 2 Sensor 1)
29. P0051 - HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
30. P0052 - HO2S Heater Control Circuit High (Bank 2 Sensor 1)
31. P0056 - HO2S Heater Control Circuit (Bank 2 Sensor 2)
32. P0057 - HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
33. P0058 - HO2S Heater Control Circuit High (Bank 2 Sensor 2)
34. P0068 - Manifold Absolute Pressure (MAP) Sensor/Barometric Pressure (BARO) Sensor Range/Performance Problem
35. P0070 - Ambient Air Temperature Sensor Circuit
36. P0071 - Ambient Air Temperature Sensor Range/Performance
37. P0072 - Ambient Air Temperature Sensor Circuit Low Input
38. P0073 - Ambient Air Temperature Sensor Circuit High Input
39. P0100 - Mass or Volume Air Flow Circuit Malfunction
40. P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem
41. P0102 - Mass or Volume Air Flow Circuit Low Input
42. P0103 - Mass or Volume Air Flow Circuit High Input
43. P0106 - Manifold Absolute Pressure (MAP) Sensor Barometric Pressure (BARO) Sensor Range/Performance Problem
44. P0116 - Engine Coolant Temperature Circuit Range/Performance Problem
45. P0117 - Engine Coolant Temperature Circuit Low Input
46. P0118 - Engine Coolant Temperature Circuit High Input
47. P0122 - Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input
48. P0123 - Throttle/Pedal Position Sensor/Switch "A" Circuit High Input
49. P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
50. P0131 - O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
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