P0ADF

Hybrid/EV Battery Negative Contactor Control Circuit Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

The car won't start
Loss of power when driving
Check engine light is on
Hybrid system warning
Clicking sound when trying to start

Causes

Open or short circuit in control circuit
Faulty negative contactor
Damaged connectors or corrosion
Blown fuse
Battery management module (BMS) malfunction

How to Fix

Check the integrity of the contactor control circuit
Inspect connectors and wires for damage
Check control circuit fuses
Test negative contactor
Check Battery Management Module (BMS) operation
Repair only from an authorized dealer

Related codes

P0AE0 P0AE1 P0AE2