P2338

Cylinder 3 Above Knock/Combustion Vibration Sensor Threshold

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Knocking or ringing noise from the engine
Loss of engine power
Increased fuel consumption
Unstable engine idling
Check engine light comes on

Causes

Poor fuel quality (low octane number)
Knock sensor malfunction
Problems with the ignition system (plugs, coils)
Carbon accumulation in the combustion chamber
Malfunction of fuel injectors

How to Fix

Check fuel quality and replace if necessary
Check the condition of the spark plugs and coils
Diagnose the knock sensor and its wiring
Clean the combustion chamber from carbon deposits
Check the operation of the fuel injectors

Related codes

P0325 P0330 P0335