P0CF2

Hybrid/EV Electronics Coolant Temperature Sensor A Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable hybrid/electric system operation
Overheat warning on dashboard
Reduced power or performance
Increased fuel consumption (in hybrid models)
Enabling emergency operation

Causes

Coolant temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor connection or corroded connectors
Problems with the control module
Low coolant level

How to Fix

Check the level and condition of the coolant
Inspect the sensor circuit for damage
Check sensor connections and connectors
Test the coolant temperature sensor
Replace sensor if necessary

Related codes

P0CF1 P0CF3 P0CF4