What is the diagnostic code for cylinder 6 glow plug circuit?

What is the diagnostic code for cylinder 6 glow plug circuit?

P0676 is a diagnostic trouble code (DTC) for “Cylinder 6 Glow Plug Circuit”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

What is the glow plug on a diesel engine?

Used in diesel engines to heat a cylinder head when starting up a cold engine, the glow plug is an important part of cold weather start-up. Each cylinder of the engine has a glow plug to heat the cylinder head. A glow plug will typically last 100,000 miles, but can fail before that approximate mileage.

How can you tell if a glow plug is open?

Check the glow plugs for an open circuit. Pull the connector off the glow plugs. Use a test light and connect it to the positive battery terminal. Touch each terminal to a glow plug. Each should show a good ground. They can also be tested with an ohmmeter. Each should have less than .4-ohms, or very low resistance.

Is there a glow plug control module circuit?

The circuit is common on all diesels with the exception of the component used to time the glow plug operation. Either the vehicle will have a glow plug control module or the PCM will do this. In lieu of a service manual, just call an auto parts store and ask if they sell a control module. If not, then the computer controls the timing.

P0676 is a diagnostic trouble code (DTC) for “Cylinder 6 Glow Plug Circuit”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

What does the code p0678 mean on a glow plug?

The code P0678 tells you that something in the glow plug circuit is faulty causing the glow plug on cylinder #8 to fail to heat up. The entire circuit must be checked to locate the fault.

Can a bad glow plug cause an engine to start?

Note: If a P0670 trouble code is present along with this DTC, carry out P0670 diagnosis before diagnosing this code. With just one glow plug failure other than the check engine light coming on, the symptoms will be minimal since the engine will normally start with one bad plug.

The circuit is common on all diesels with the exception of the component used to time the glow plug operation. Either the vehicle will have a glow plug control module or the PCM will do this. In lieu of a service manual, just call an auto parts store and ask if they sell a control module. If not, then the computer controls the timing.