P0275: Cylinder 5 Contribution/Balance
Do not keep driving
Expect rough running. Ask for a compression or leak-down test if the injector tests good.
What this code means
Cylinder 5 is contributing measurably less than its neighbours. Where several balance codes appear on the same bank, suspect something that bank shares — a fuel rail restriction, or a camshaft problem affecting those cylinders — rather than several independent failures.
Likely causes
Start here
- Clogged fuel injectors · moderate
- Low engine compression · specialist
- Burnt or leaking valve · specialist
- Failed fuel injector · moderate
Less common
- Worn piston rings · specialist
- Collapsed or stuck valve lifter · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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