P03C6
Cylinder 5 Combustion Performance
P03C6 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Combustion Performance. Common causes: spark plug fault, problems with the ignition coil. Estimated repair cost: $56–167.
Symptoms
- Uneven engine operation
- Power reduction
- Increased fuel consumption
- Vibrations at idle
Causes
- Spark plug fault
- Problems with the ignition coil
- Dirty or faulty fuel injectors
- Low cylinder compression
- Problems with the air intake system
- Malfunction of sensors (mass air flow sensor, oxygen sensor)
How to Fix
- Check the condition of the spark plug in cylinder 5
- Test the ignition coil
- Check the operation of the fuel injector
- Measure the compression in the cylinder
- Check the tightness of the intake tract
- Scan sensors for errors
Related codes
Error P03C6 by Vehicle Brand
FAQ
What does the P03C6 code mean?
P03C6 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Combustion Performance
What causes a P03C6 error code?
The most common causes of P03C6 include: Spark plug fault; Problems with the ignition coil; Dirty or faulty fuel injectors; Low cylinder compression.
How do I fix a P03C6 diagnostic trouble code?
To fix P03C6: Check the condition of the spark plug in cylinder 5. Test the ignition coil. Check the operation of the fuel injector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03C6?
Limited driving only, diagnose soon
How much does it cost to fix P03C6?
The estimated repair cost for P03C6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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