P2C38

Cylinder Head Temperature Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Unstable engine operation at idle
Engine overheating (in some cases)
Incorrect engine temperature readings

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 ECU

How to Fix

Check the integrity of wiring and connectors
Check the sensor resistance (compare with the norm)
Clean sensor connector contacts
Replace the head temperature sensor if necessary
Check the operation of the system after repair

Related codes

P2C37 P2C39 P0128