P2BDF

Motor Electronics Coolant Temperature Sensor C Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–28 (est.)

Symptoms

Incorrect temperature readings on the dashboard
Deteriorating fuel economy
Problems with engine warming up
Cooling fan turns on for no reason
Check Engine Light Illuminates

Causes

Coolant temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with the engine ECU
Corroded contacts or damaged wiring

How to Fix

Check sensor resistance at different temperatures
Inspect the sensor circuit for damage
Check voltage and ground in the circuit
Replace the coolant temperature sensor if necessary
Clean sensor connector contacts

Related codes

P2BDE P2BE0 P0113