P0AC2

Hybrid/EV Battery Pack Current Sensor A Circuit High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$50–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
The car goes into emergency mode
Unstable operation of the power plant
Reducing electric range

Causes

Battery current sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Wiring harness damage
Battery management module malfunction

How to Fix

Check the continuity of the current sensor circuit
Inspect connectors and contacts for corrosion
Check sensor signal parameters
Replace faulty current sensor if necessary
Test the battery management module

Related codes

P0AC0 P0AC1 P0AC3