What Does P06CE Mean?
The ECM has detected that the cylinder 10 glow plug is not functioning correctly on this diesel engine. This code is found exclusively on V10 or V12 diesel configurations. The glow plug's resistance, current draw, or temperature response is outside normal parameters. Impact on drivability is generally minimal on such large engines but cold-start reliability is reduced.
Common Causes
45%
Failed cylinder 10 glow plug — heating element failure, open circuit, or high resistance
20%
Damaged or corroded wiring/connector to cylinder 10 glow plug
15%
Glow plug control module output driver failure for cylinder 10 channel
12%
High-resistance ground connection in the cylinder 10 glow plug return path
8%
ECM internal monitoring fault for cylinder 10 glow plug
Diagnostic Steps
1
Disconnect the cylinder 10 glow plug and measure resistance — 0.5–2.0 ohms is normal. Verify correct cylinder location from the manufacturer service manual.
2
Check for battery voltage at the harness connector during the preheat cycle (key ON, engine cold). No voltage indicates a GPCM or wiring issue.
3
Inspect the wiring and connector for heat damage, corrosion, or mechanical wear. On V10/V12 engines, rear cylinder wiring is often difficult to access and prone to damage.
4
Use a clamp ammeter to compare current draw across all glow plug circuits during preheat — identify any outliers.
5
On V10/V12 applications, check whether the GPCM uses a single module or dual modules (one per bank). Test the module responsible for cylinder 10 specifically.
Estimated Repair Cost
$100 - $500
Parts + labor, varies by vehicle and location
The ECM has detected that the cylinder 10 glow plug is not functioning correctly on this diesel engine. This code is found exclusively on V10 or V12 diesel configurations. The glow plug's resistance, current draw, or temperature response is outside normal parameters. Impact on drivability is general...
The most common cause of P06CE (Cylinder 10 Glow Plug Incorrect) is: Failed cylinder 10 glow plug — heating element failure, open circuit, or high resistance
Typical repair costs for P06CE range from $100 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. A single failed glow plug on a 10+ cylinder diesel has negligible impact on warm-weather operation. Cold-start performance in freezing conditions may be slightly impaired. If multiple glow plug codes are present, address them together as a set to restore full cold-start capability.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P06CE to identify the root cause.
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Quick Info
Category
Powertrain
System
Diesel Cold Start / Glow Plug System
Difficulty
Type
Generic (SAE)
Recommended Tools
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