U0631

Lost Communication With Engine Coolant Temperature Sensor 5

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–33 (est.)

Symptoms

Check Engine Light Is On
Increased fuel consumption
Deterioration of vehicle dynamics
Engine overheating
Incorrect temperature readings on the dashboard

Causes

Open or short circuit in the sensor circuit
Coolant temperature sensor 5 malfunction
Poor contact in the sensor connector
Wiring harness damage
ECU malfunction

How to Fix

Check the integrity of the sensor circuit
Check the resistance of the temperature sensor
Inspect the sensor connector for oxidation or damage.
Check wiring harness for damage
If necessary, replace coolant temperature sensor 5

Related codes

U0632 U0630 P0115