P0CD5

Hybrid/EV Battery Pack Coolant Temperature Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Incorrect battery temperature readings on the dashboard
Activating the emergency mode of the hybrid system
Increased fuel consumption in hybrid models

Causes

Coolant temperature sensor B malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Corroded contacts or damaged wiring
Hybrid ECU malfunction

How to Fix

Check the condition of the coolant temperature sensor B
Inspect the sensor circuit for breaks or damage
Check the quality of contacts in the connectors
Replace the faulty sensor if necessary
Test the operation of the system after repair

Related codes

P0CD4 P0CD6 P0A80