P0674 DODGE code

P0674 is a diagnostic trouble code (DTC) for “Cylinder 4 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.

How do I fix code P0674?


Zitat von Youtube: Check the glow plug control module itself and its electrical connections for any damages.

What is P0674 mean?

OBD II fault code P0674 is a generic code that is defined as “Cylinder 4 Glow Plug Circuit/Open”, and is set when the PCM (Powertrain Control Module) detects an electrical defect/failure/malfunction that causes a break in continuity in the control circuitry of the glow plug on cylinder #4.

What is a glow plug circuit?

A glow plug is a device utilized in diesel engines to heat a cylinder head when starting up a cold engine. The diesel engine uses the high level of heat through compression, which quickly ignites the fuel. Each cylinder of the engine has a glow plug to heat the cylinder head.

What is glow plug control module?

The glow plug control module determines the timing and electric current required by the glow plugs based on input from the Engine Control Unit; The heating element in the glow plug is electrified so it heats up and emits visible light (hence the name);

What is code P0678 mean?

What the P0678 code means. The P0678 code is a generic OBD-II trouble code indicating a problem with the glow plug circuit in cylinder number 8. Glow plugs are used in diesel engines to help warm the engine to aid ignition. The powertrain control module (PCM) helps control this heat.

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Where is number 1 glow plug on a Duramax?

Where is the number 1 glow plug on Duramax? The number 1 glow plug is on the passenger side of the vehicle. Number 1, 3, 5, 7 are on the passenger side. That means the odd number of glow plugs are on the passenger side.