P2345: Cylinder 10 Above Knock/Combustion Vibration Sensor Threshold
What to do
Avoid heavy loads and ease off if you hear a rattle. Check the specified fuel grade first — on a large high-performance engine the specified grade is frequently premium, and ordinary fuel alone causes this.
What this code means
Cylinder 10 is requiring more knock protection than normal. The mechanism is at P2336 and the shared-cause discriminator at P2341.
Likely causes
Start here
- Incorrect or low octane fuel · easy
- Carbon deposits in the combustion chamber · moderate
- Clogged fuel injectors · moderate
Less common
- Faulty knock sensor · moderate
- Engine overheating · moderate
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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