P0328

Knock/Combustion Vibration Sensor A Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–89 (est.)

Symptoms

Loss of engine power
Unstable idling
Increased fuel consumption
Detonation knocks

Causes

Faulty knock sensor
Open or shorted wiring harness
Poor contact in the sensor connector
Grounding problems
Mechanical engine problems

How to Fix

Check the integrity of the knock sensor wiring harness
Check the contacts in the sensor connector for oxides or damage
Check knock sensor resistance (compare with manufacturer specifications)
Replace knock sensor if necessary
Check sensor circuit grounding

Related codes

P0327 P0325 P0300