P0673 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0673 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0673 code.

What Does P0673 Code Mean?

OBD-II Code P0673 is defined as a Cylinder 3 Glow Plug Circuit/Open

The Glow Plug is used on diesel engines to preheat the cylinder before the engine is started. If the engine control module (PCM) detects the glow plug for cylinder three is not operating properly, the PCM will set code P0673.

P0673 Symptoms

• Engine may not start
• Hard or no start in cold weather

Common Problems That Trigger the P0673 Code

• Glow plug control module failure
• Glow plug failure
• Glow plug wiring harness failure

Common Repairs Needed for the P0673 Code

• Glow Plug Replacement