OBD Guide

P032C

Knock/Combustion Vibration Sensor C Circuit Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Poor engine performance
  • Power reduction
  • Increased fuel consumption
  • Check Engine Light

Causes

  • Knock sensor malfunction (circuit C)
  • Open or short circuit in wiring harness
  • Poor connection or corrosion in the sensor connector
  • ECU malfunction (rare)

How to Fix

  1. Check the integrity of the knock sensor wiring harness (circuit C)
  2. Check the sensor connector for corrosion or damage.
  3. Replace knock sensor if necessary
  4. Check the resistance and signal of the sensor using an oscilloscope (if possible)
  5. Reset error and test drive

Related codes

Error P032C by Vehicle Brand