P00B5

Radiator Coolant Temperature Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Incorrect coolant temperature readings
Engine overheating
Unstable engine operation
Check Engine Light Illuminates

Causes

Wiring harness damage
Poor contact in sensor connectors
Coolant temperature sensor malfunction
Short circuit in the circuit
Problems with the ECU

How to Fix

Check the integrity of the wiring harness
Clean and check the contacts in the sensor connectors
Replace the coolant temperature sensor if necessary
Check resistance and voltage in the circuit
Scan the ECU for other errors

Related codes

P0115 P0116 P0117 P0118