P2C3C

Cylinder Head Temperature Sensor B Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine temperature readings
Cooling fan turns on periodically
Reduced engine power
Check Engine Light Is On
The engine goes into emergency mode

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Head temperature sensor malfunction
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion or damage
Check the resistance of the temperature sensor
Replace the head temperature sensor if necessary
Check the operation of the system after repair

Related codes

P2C3B P2C3D P2C3A