What Does the P0673 Code Mean?
OBD-II Code P0673 is defined as a Cylinder 3 Glow Plug Circuit/Open. This code indicates that the engine control module (PCM) has detected an issue with the glow plug responsible for preheating cylinder three before engine start-up. Proper functioning of the glow plug is essential, especially in cold conditions, to ensure a smooth engine start.
What Causes the P0673 Code?
Several factors can trigger the P0673 code, including:
- Glow plug control module failure: The control module may malfunction, preventing the glow plug from receiving power.
- Glow plug failure: The glow plug itself may be defective or burnt out, failing to heat the cylinder properly.
- Glow plug wiring harness failure: Issues with the wiring harness, such as breaks or corrosion, can disrupt the electrical flow to the glow plug.
What Are the Symptoms of the P0673 Code?
When the P0673 code is present, you might experience the following symptoms:
- Engine may not start, especially in cold weather.
- Hard or no start conditions when temperatures drop.
How Serious Is the P0673 Code?
The P0673 code is classified as an urgent issue. Delaying repairs can lead to severe engine performance problems, including difficulty starting the engine, which can leave you stranded. It’s advisable to address this code promptly to prevent further complications.
How to Diagnose the P0673 Code
Diagnosing the P0673 code involves a few systematic steps:
- Use an OBD-II scanner to confirm the P0673 code is present.
- Inspect the glow plug and wiring harness for visible damage or corrosion.
- Test the glow plug with a multimeter to ensure it is functioning properly.
- Check the glow plug control module for faults.
Common Repairs for the P0673 Code
Common repairs that may be needed when addressing the P0673 code include:
- Glow plug replacement.
- Repair or replacement of the glow plug wiring harness.
- Glow plug control module replacement or repair.
How Much Does It Cost to Fix the P0673 Code?
The cost to fix the P0673 code can vary significantly based on your location and the specific repairs needed. Generally, you can expect to pay between $100 and $300 for diagnosis and repairs, depending on whether you need to replace the glow plug, wiring, or control module.
Can I Fix the P0673 Code Myself?
While some experienced DIYers may be able to tackle the repairs associated with the P0673 code, it’s important to have a good understanding of automotive electrical systems. If you are not confident in your skills, it is recommended to seek professional assistance to ensure proper diagnosis and repairs.
