P0CAC

Hybrid/EV Battery Temperature Sensor M Circuit Intermittent/Erratic

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Hybrid system power reduction
Warning messages on the dashboard
Unstable operation of the hybrid system
Decreased battery efficiency
The car may go into emergency mode

Causes

Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Battery temperature sensor malfunction
Wiring Harness Problems
Battery management module malfunction

How to Fix

Check the integrity of wiring and connectors
Test battery temperature sensor
Check sensor circuit resistance
Replace the faulty sensor if necessary
Update Battery Management Module Software

Related codes

P0CAB P0CAD P0CAE