OBD Guide

P0325

Knock/Combustion Vibration Sensor A Circuit

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Causes

  • Open or short circuit in the sensor circuit
  • Faulty knock sensor
  • Wiring Harness Problems
  • Engine ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness to the sensor
  2. Check the sensor resistance (usually 500-700 kOhm)
  3. Replace sensor if necessary
  4. Check the contacts and grounding of the circuit

Related codes

Error P0325 by Vehicle Brand