P0A29

Hybrid/EV Battery Power Off Circuit High

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Hybrid system does not activate
Power reduction or emergency operation mode
Check Engine light comes on
The battery is not charging properly
Unusual sounds from the battery compartment

Causes

Power control relay failure
Damaged wiring or poor contacts
Problems with the hybrid battery management system
High resistance in the circuit
Short circuit in power supply

How to Fix

Check power control circuit voltage
Test relays and circuit fuses
Inspect the wiring for damage
Check connections and contacts in the circuit
Hybrid Battery Management System Diagnostics
Repair only from an authorized dealer