P2AFD

Engine Coolant Temperature Sensor 4 Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–28 (est.)

Symptoms

Incorrect temperature readings on the dashboard
Engine overheating
Increased fuel consumption
Unstable engine operation
Check Engine Light Is On

Causes

Malfunction of coolant temperature sensor No. 4
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Contact corrosion
Problems with the engine ECU

How to Fix

Check the sensor readings using a diagnostic scanner
Inspect the sensor wiring and connectors for damage
Check sensor resistance at different temperatures
Replace coolant temperature sensor No. 4 if necessary
Clean connector contacts or replace damaged wiring

Related codes

P0115 P0116 P0117