P0CB1

Hybrid/EV Battery Temperature Sensor N Circuit Intermittent/Erratic

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Hybrid system power reduction
Switching to emergency mode
Increased fuel consumption (for hybrids)
Check Engine Light or Battery Warning
Unstable operation of the power plant

Causes

Poor contact in the sensor connector
Open or short circuit in the sensor circuit
Temperature sensor malfunction
Wiring harness damage
Problems with the battery management module

How to Fix

Check sensor connections and connectors
Test the sensor circuit for open and short circuit
Check the resistance and signal of the temperature sensor
Replace faulty temperature sensor
Update battery management module software (if necessary)

Related codes

P0CB0 P0CB2 P0AFA