P0278
Cylinder 6 Contribution/Balance
P0278 is an OBD-II diagnostic trouble code meaning: Cylinder 6 Contribution/Balance. Common causes: low compression in cylinder 6, cylinder 6 spark plug fault. Estimated repair cost: $11–278.
Symptoms
- Vibration and rough engine operation
- Misfire in cylinder 6
- Power reduction
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Low compression in cylinder 6
- Cylinder 6 spark plug fault
- Malfunction of the ignition coil of cylinder 6
- Cylinder 6 injector malfunction
- Air leaks or inlet seal failure
How to Fix
- Read codes and check for misfire codes (P0306)
- Replace the spark plug of cylinder 6
- Check/replace ignition coil of cylinder 6
- Measure compression in cylinder 6
- Check cylinder 6 injector for fuel flow
- Check the tightness of the intake manifold in the area of cylinder 6
Related codes
Error P0278 by Vehicle Brand
FAQ
What does the P0278 code mean?
P0278 is an OBD-II diagnostic trouble code that indicates: Cylinder 6 Contribution/Balance
What causes a P0278 error code?
The most common causes of P0278 include: Low compression in cylinder 6; Cylinder 6 spark plug fault; Malfunction of the ignition coil of cylinder 6; Cylinder 6 injector malfunction.
How do I fix a P0278 diagnostic trouble code?
To fix P0278: Read codes and check for misfire codes (P0306). Replace the spark plug of cylinder 6. Check/replace ignition coil of cylinder 6. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0278?
Limited driving only, diagnose soon
How much does it cost to fix P0278?
The estimated repair cost for P0278 is $11–278. Actual cost depends on your vehicle, location, and labor rates.
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