P2339

Cylinder 4 Above Knock/Combustion Vibration Sensor Threshold

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–33 (est.)

Symptoms

Engine knocking or ringing
Reduced engine power
Increased fuel consumption
Unstable engine idling

Causes

Low quality fuel
Faulty spark plugs
Problems with the ignition system
Incorrect ignition timing
Engine overheating

How to Fix

Check fuel quality and replace if necessary
Check and replace spark plugs
Check the ignition system for malfunctions
Check the ignition timing and adjust if necessary
Check the engine cooling system

Related codes

P0325 P0326 P0327