P033B

Knock/Combustion Vibration Sensor D Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Check Engine Light Illuminates
Detonation knocks

Causes

Knock sensor fault D
Open or short circuit in wiring harness
Poor contact in the sensor connector
Engine control unit malfunction
Engine mechanical problems (detonation)

How to Fix

Visual inspection of the wiring harness and sensor connector
Checking the resistance of the knock sensor
Checking the sensor signal with an oscilloscope
Replace the sensor if necessary
Repairing the wiring harness if damage is found

Related codes

P0325 P0326 P0327 P0328