P2D56

Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Reduced performance of the hybrid system
Incorrect coolant temperature readings
Hybrid battery overheating

Causes

Coolant temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in connectors
Wiring harness damage
Problems with the hybrid system control module

How to Fix

Check the continuity of the temperature sensor circuit
Check sensor connectors and contacts
Replace the coolant temperature sensor if necessary
Check and replace wiring harness if necessary
Check the hybrid system control module

Related codes

P2D55 P2D57 P2D58