P01E3

Engine Coolant Temperature Sensor 3 Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Engine overheating
Increased fuel consumption
Difficulty starting the engine

Causes

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

How to Fix

Check the integrity of the wiring harness
Check the resistance of the coolant temperature sensor
Check the contact in the sensor connector
Replace the coolant temperature sensor if necessary
Flash the ECU if you suspect it is faulty

Related codes

P0115 P0116 P0117