P2D54

Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–67 (est.)

Symptoms

Check Engine Light Is On
Reduced performance of the hybrid system
Activating emergency mode
Incorrect coolant temperature readings
Reduced vehicle power

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Malfunction of the temperature sensor itself
Wiring Harness Problems
Malfunction of the hybrid system control unit

How to Fix

Check the continuity of the temperature sensor circuit
Inspect the sensor connectors and contacts for corrosion or damage.
Check the resistance of the temperature sensor (compare with nominal values)
If necessary, replace the coolant temperature sensor
Check the operation of the system after repair

Related codes

P2D53 P2D55 P0A93