Cylinder 10 Glow Plug Circuit Range/Performance
The P06C2 code indicates that the Engine Control Module (ECM) has detected a performance or range issue in the glow plug circuit for cylinder 10. This typically means the glow plug resistance is out of specification, the circuit is open or shorted, or the glow plug control module is malfunctioning. In diesel engines, glow plugs preheat the combustion chamber for cold starts; a fault can cause hard starting, misfires, and increased emissions.
01. Most Common Causes
- Faulty glow plug in cylinder 10
- Open or shorted glow plug wiring or connector
- Failed glow plug control module or relay
- ECM software or hardware issue
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Hard starting, especially in cold weather
- Rough idle or misfire on cylinder 10
- Reduced fuel economy and increased emissions
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve freeze frame data and confirm code P06C2.
Step 2: Visually inspect glow plug wiring and connector for cylinder 10 for damage, corrosion, or loose connections.
Step 3: Measure resistance of glow plug 10 with a multimeter (typically 0.5-2 ohms); compare to manufacturer specs.
Step 4: Check glow plug control module and relay operation; test power and ground circuits.
Step 5: If all else is normal, update ECM software or replace ECM as last resort.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code, especially in cold weather, as it can cause hard starting, misfires, and potential engine damage. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a single glow plug replacement, including parts and labor. If the control module or wiring needs repair, costs may be higher.