BMW DTC P0672 – Cylinder 2 Glow Plug Circuit/Open
DTC P0672 meaning on BMW
DTC P0672 for BMW indicates a fault in the glow plug circuit for cylinder 2. Glow plugs are used in diesel engines to help with cold starts by heating the air in the combustion chamber. This code specifically points to an open circuit, meaning there is a break or discontinuity in the electrical path for the glow plug in cylinder 2.
BMW DTC P0672 symptoms
Symptoms of DTC P0672 in a BMW may include:
- Hard starting, especially in cold weather
- Rough idling
- Decreased engine performance
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0672 causes
The common causes of DTC P0672 in a BMW are:
- Defective glow plug in cylinder 2
- Wiring harness issues, such as a broken wire or poor connection
- Faulty glow plug control module
- Corrosion or damage in the electrical connections
BMW DTC P0672 seriousness
While DTC P0672 may not cause immediate drivability issues, it can lead to starting problems and reduced engine performance, especially in cold conditions. Ignoring this fault can potentially cause further damage to the engine over time.
How to diagnose DTC P0672 on BMW
To diagnose DTC P0672 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the glow plug in cylinder 2 for physical damage
- Check the wiring harness for any visible issues
- Test the glow plug circuit for continuity using a multimeter
- Inspect the glow plug control module for faults
How to fix DTC P0672 on BMW
To fix DTC P0672 on a BMW, you can try the following solutions:
- Replace the faulty glow plug in cylinder 2
- Repair or replace any damaged wiring in the glow plug circuit
- Check and repair any corrosion or poor connections in the electrical system
- Replace the glow plug control module if necessary
How to erase DTC P0672 on BMW
To erase DTC P0672 on a BMW, you can clear the fault code using a diagnostic scanner. After fixing the underlying issue causing the fault code, you can reset the code to turn off the Check Engine Light and ensure the repair was successful.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.