Cylinder 8 Glow Plug Incorrect
The P06CC code indicates that the glow plug in cylinder 8 is not operating within the expected parameters. This is common in diesel engines where glow plugs are used to aid cold starts. The engine control module (ECM) monitors the resistance of each glow plug; when the resistance is out of range, it sets this code. This can lead to hard starting, misfires, and increased emissions.
1. Most Common Causes
- Faulty glow plug in cylinder 8
- Open or shorted glow plug circuit
- Damaged glow plug relay or fuse
- ECM software or hardware issue
2. Symptoms You Will Notice
- Hard starting, especially in cold weather
- Engine misfire or rough idle
- Check Engine Light illuminated
- Reduced fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect glow plug wiring and connector at cylinder 8.
Step 3: Measure glow plug resistance with a multimeter (should be 0.5-2 ohms).
Step 4: Check glow plug relay and fuse operation.
Step 5: If all else is fine, replace the glow plug in cylinder 8.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
You can drive short distances, but it may cause hard starting and increased emissions. It's best to fix it promptly to avoid further issues.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on vehicle make and model.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.