P068C: Cylinder 7 Glow Plug Control Circuit Low
Severity
Medium
System
Computer and Output Circuits
What Does P068C Mean?
P068C is a diagnostic trouble code indicating: Cylinder 7 Glow Plug Control Circuit Low. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Symptoms of P068C
- ⚠️ Check Engine Light (MIL) illuminated
- ⚠️ Cylinder 7 Glow Plug reading at zero or minimum value
- ⚠️ Related system not functioning or in fail-safe mode
- ⚠️ Multiple system malfunctions
Common Causes
- 🔍 Open or broken wire in Cylinder 7 Glow Plug circuit
- 🔍 Poor ground connection at Cylinder 7 Glow Plug
- 🔍 Faulty Cylinder 7 Glow Plug with no output signal
- 🔍 Disconnected or loose Cylinder 7 Glow Plug connector
- 🔍 Blown fuse in related circuit
Frequently Asked Questions
What does P068C mean?
P068C indicates: Cylinder 7 Glow Plug Control Circuit Low. The vehicle's computer has detected that the Cylinder 7 Glow Plug is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P068C?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P068C for extended periods may cause additional problems.
How much does it cost to fix P068C?
Repair costs for P068C typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.
What To Do Next
Possible Fixes
- 🔧 Repair broken wire or restore ground in Cylinder 7 Glow Plug circuit
- 🔧 Clean and secure Cylinder 7 Glow Plug connector and ground points
- 🔧 Replace failed Cylinder 7 Glow Plug
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.
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