OBD Guide

P2C39

Cylinder Head Temperature Sensor B Range/Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Incorrect engine temperature readings
  • Engine overheating
  • Reduced engine performance
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Faulty head temperature sensor
  • Damage to the sensor wiring harness
  • Poor contact in the sensor connector
  • Short circuit or open circuit in the sensor circuit
  • Problems with the engine control unit

How to Fix

  1. Check the condition of the head temperature sensor
  2. Inspect the wiring harness and connectors for damage.
  3. Check the sensor circuit for an open or short circuit
  4. Replace the head temperature sensor if necessary
  5. Reset the error code and check if it returns

Related codes

Error P2C39 by Vehicle Brand