BMW DTC P138E – Ion Ignition Coil Cylinder 10
DTC P138E meaning on BMW
DTC P138E on a BMW indicates an issue with the Ion Ignition Coil Cylinder 10. This fault code is specific to BMW vehicles and is related to the ignition system of the engine.
BMW DTC P138E symptoms
Symptoms of DTC P138E on a BMW may include rough idling, misfires, loss of power, and potentially an illuminated check engine light on the dashboard.
BMW DTC P138E causes
The most common causes of DTC P138E on a BMW are a faulty Ion Ignition Coil Cylinder 10, wiring issues, or a problem with the engine control module (ECM).
BMW DTC P138E seriousness
Ignoring DTC P138E 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 P138E on BMW
To diagnose DTC P138E on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform further testing on the Ion Ignition Coil Cylinder 10, wiring, and ECM to pinpoint the exact cause of the issue.
- Use a diagnostic scanner to read the fault code
- Inspect the Ion Ignition Coil Cylinder 10 for any visible damage
- Check the wiring harness for any signs of wear or corrosion
- Test the ECM for proper functionality
How to fix DTC P138E on BMW
Fixing DTC P138E on a BMW typically involves replacing the faulty Ion Ignition Coil Cylinder 10, repairing any damaged wiring, or addressing any issues with the ECM. It is recommended to follow the manufacturer’s repair procedures and use quality replacement parts.
- Replace the Ion Ignition Coil Cylinder 10
- Repair any damaged wiring or connectors
- If necessary, reprogram or replace the ECM
How to erase DTC P138E on BMW
Once the underlying issue causing DTC P138E on a BMW has been fixed, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the vehicle’s ECM to monitor the system for any new faults.
- Use a diagnostic scanner to clear the fault code
- Verify that the issue has been resolved by driving the vehicle and checking for any reoccurrence of 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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