P0D12

Battery Charging System Negative Contactor A Control Circuit Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced battery charging efficiency
Problems starting the engine
Hybrid system power reduction
Errors in the operation of the high voltage system

Causes

Negative contactor fault
Problems with wiring or connections in the control circuit
Power electronics control module malfunction
Corrosion or oxidation of contacts
Problems with the control unit software

How to Fix

Check the condition of the contactor and its connections
Check the integrity of the control circuit
Test contactor resistance
Check the operation of the control module
Update the control unit software if necessary

Related codes

P0D10 P0D11 P0D13