BMW DTC P137C – Cold Start Ignition Timing Performance (Bank 2)
DTC P137C meaning on BMW
DTC P137C on a BMW indicates a Cold Start Ignition Timing Performance issue in Bank 2. This fault code is specific to the ignition timing during cold start conditions on the engine’s second bank.
BMW DTC P137C symptoms
Symptoms of BMW DTC P137C may include rough idling during cold starts, reduced engine performance, hesitation or misfires, and potentially an illuminated check engine light on the dashboard.
BMW DTC P137C causes
The causes of DTC P137C on a BMW can vary but commonly include faulty ignition timing components, such as the ignition coils, spark plugs, or the ignition control module. Other potential causes may involve issues with the engine’s sensors or wiring related to the ignition system.
BMW DTC P137C seriousness
While DTC P137C may not cause immediate drivability issues, it can lead to poor engine performance, reduced fuel efficiency, and potential long-term damage if left unresolved. It is advisable to address this fault code promptly to prevent further complications.
How to diagnose DTC P137C on BMW
To diagnose DTC P137C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform further testing on the ignition system components. This may involve checking the ignition coils, spark plugs, wiring connections, and related sensors for any signs of damage or malfunction.
How to fix DTC P137C on BMW
Fixing DTC P137C on a BMW usually involves replacing or repairing the faulty ignition timing components identified during the diagnostic process. This may include replacing defective ignition coils, spark plugs, or the ignition control module. Ensuring proper installation and calibration of these components is crucial to resolving the issue.
How to erase DTC P137C on BMW
Once the underlying issue causing DTC P137C on a BMW has been addressed and fixed, the fault code can be erased using a diagnostic scanner. By clearing the code, the check engine light should turn off, indicating that the problem has been resolved. It is important to verify that the issue has been successfully fixed before clearing the fault code.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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