BMW DTC P0670 – Glow Plug Control Module 1 Control Circuit/Open
DTC P0670 meaning on BMW
The Diagnostic Trouble Code (DTC) P0670 for BMW refers to an issue with the Glow Plug Control Module 1 Control Circuit/Open. This code indicates that there is a malfunction in the control circuit for the glow plug module, specifically for the first control circuit.
BMW DTC P0670 symptoms
Symptoms of DTC P0670 on a BMW may include:
- Hard starting or extended cranking time
- Rough idling or misfiring
- Reduced engine performance
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0670 causes
Common causes of DTC P0670 on a BMW include:
- Faulty glow plug control module
- Open or short circuit in the control wiring
- Corrosion or poor connections in the control circuit
- Defective glow plugs
BMW DTC P0670 seriousness
The seriousness of DTC P0670 on a BMW lies in the potential impact on engine performance and emissions. Ignoring this code can lead to starting issues, rough running, and increased emissions. It is recommended to address this issue promptly to prevent further damage to the engine.
How to diagnose DTC P0670 on BMW
To diagnose DTC P0670 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes.
- Inspect the glow plug control module and wiring for any visible damage or corrosion.
- Test the glow plug control module for proper functionality using a multimeter.
- Check the glow plugs for continuity and proper operation.
How to fix DTC P0670 on BMW
To fix DTC P0670 on a BMW, you can try the following solutions:
- Replace the faulty glow plug control module.
- Repair any open or short circuits in the control wiring.
- Clean or repair any corroded connections in the control circuit.
- Replace any defective glow plugs.
How to erase DTC P0670 on BMW
To erase DTC P0670 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. After addressing the underlying issue causing the code, clearing the code will reset the Check Engine Light and monitor the system for any recurring problems.
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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