P2E77

Hybrid/EV Battery Pack Coolant Temperature Sensor D Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Incorrect battery temperature readings
Possible power reduction
Activation of emergency operation

Causes

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

How to Fix

Check the integrity of the sensor circuit
Inspect the connectors and contacts of the sensor
Check the resistance of the temperature sensor
Replace the faulty sensor if necessary
Reset the error code and check the system

Related codes

P2E76 P2E78 P0A7F