P2C3B

Cylinder Head Temperature Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Emergency engine operation
Unstable engine temperature readings
Problems starting the engine in cold weather

Causes

Short circuit in the sensor circuit
Head temperature sensor malfunction
Damaged wiring or corroded contacts
Problems with the sensor connector
Engine ECU malfunction

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and wires for damage
Test the head temperature sensor
Replace sensor if necessary
Check and update the ECU firmware if necessary

Related codes

P2C3A P2C3C P0128