BMW DTC P068C – Cylinder 7 Glow Plug Control Circuit Low
DTC P068C meaning on BMW
DTC P068C is a diagnostic trouble code that indicates an issue with the cylinder 7 glow plug control circuit on a BMW vehicle. The Engine Control Module (ECM) monitors the glow plug control circuit to ensure proper operation of the glow plug in cylinder 7. When this code is set, it means that the ECM has detected a low voltage condition in the circuit.
BMW DTC P068C symptoms
Symptoms of DTC P068C on a BMW may include:
- Check Engine Light illuminated
- Engine misfires
- Hard starting or extended cranking time
- Reduced engine performance
BMW DTC P068C causes
The common causes of DTC P068C on a BMW include:
- Faulty glow plug in cylinder 7
- Wiring or connection issues in the glow plug control circuit
- Defective Engine Control Module (ECM)
BMW DTC P068C seriousness
Ignoring DTC P068C on a BMW can lead to potential engine performance issues, reduced fuel efficiency, and increased emissions. It is important to address this code promptly to prevent further damage to the engine components.
How to diagnose DTC P068C on BMW
To diagnose DTC P068C on a BMW, a mechanic can perform the following steps:
- Use a diagnostic scan tool to retrieve the fault code and freeze frame data
- Inspect the glow plug in cylinder 7 for proper operation
- Check the wiring and connections in the glow plug control circuit for any damage or corrosion
- Test the ECM for proper functioning
How to fix DTC P068C on BMW
To fix DTC P068C on a BMW, the following steps can be taken:
- Replace the faulty glow plug in cylinder 7
- Repair any damaged wiring or connections in the glow plug control circuit
- If the ECM is found to be defective, replace it with a new one
How to erase DTC P068C on BMW
To erase DTC P068C on a BMW, the fault code can be cleared using a diagnostic scan tool. After the repair has been completed, the code can be erased to reset the Check Engine Light and ensure that the issue has been resolved.
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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