StartingSeverity Medium: diagnose soon

P0670Glow Plug Control Module "A" Control Circuit

What it means

The ECU sees a fault in the circuit it uses to command the glow plug control module.

Can I drive with P0670? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

No published cases with this code yet.

Stuck on P0670? Describe what you measured and ask the community.

P0670: Glow Plug Control Module "A" Control Circuit. The ECU sees a fault in the circuit it uses to command the glow plug control module.

Hard cold start. Glow plug lamp flashing.

Faulty glow plug control module. Wiring fault between ECU and module. Missing module supply or ground.

1. Check module supply, ground and the command signal 2. Measure the glow plugs 3. Check the module connector

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.