P0CD7

Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit Low

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Vehicle power limitation
Error message on the dashboard
Increased noise of the cooling system

Causes

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

How to Fix

Check the integrity of the sensor circuit (resistance, voltage)
Inspect connectors and contacts for corrosion or damage
Check the functionality of the temperature sensor
If necessary, replace the coolant temperature sensor
Check and, if necessary, update the software of the control unit

Related codes

P0CD6 P0CD8 P0CD9