BMW DTC P138C – Ion Ignition Coil Cylinder 8
DTC P138C meaning on BMW
The DTC P138C code on a BMW indicates an issue with the Ion Ignition Coil Cylinder 8. This fault code is specific to the ignition coil in cylinder 8 of the engine.
BMW DTC P138C symptoms
Symptoms of a DTC P138C on a BMW may include rough idling, misfires, loss of power, and potentially an illuminated check engine light on the dashboard.
BMW DTC P138C causes
The most common causes of a DTC P138C on a BMW are a faulty ignition coil in cylinder 8, wiring issues related to the ignition system, or a problem with the engine control module (ECM).
BMW DTC P138C seriousness
Ignoring a DTC P138C on a BMW can lead to poor engine performance, reduced fuel efficiency, and potential damage to the catalytic converter over time. It is recommended to address this issue promptly.
How to diagnose DTC P138C on BMW
To diagnose a DTC P138C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform further testing on the ignition coil in cylinder 8, inspect the wiring for any damage, and check the ECM for proper functioning.
- Use a diagnostic scanner to read the fault code
- Inspect the ignition coil in cylinder 8 for signs of damage
- Check the wiring harness for any issues
- Test the engine control module (ECM) for proper operation
How to fix DTC P138C on BMW
Fixing a DTC P138C on a BMW typically involves replacing the faulty ignition coil in cylinder 8, repairing any damaged wiring, and ensuring the ECM is functioning correctly.
- Replace the ignition coil in cylinder 8
- Repair any damaged wiring related to the ignition system
- Verify proper operation of the engine control module (ECM)
How to erase DTC P138C on BMW
Once the underlying issue causing the DTC P138C on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and erase the code from the vehicle’s memory.