P0A8B

14 Volt Power Module System Voltage

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–500 (est.)

Symptoms

Malfunction warning on the instrument panel
Problems with electrical equipment operation
12V battery discharge
The hybrid system may go into emergency mode

Causes

14V converter malfunction
Problems with wiring harness or connections
Damage to the high voltage battery
Low 12V battery charge
Errors in the system software

How to Fix

Check the condition of the 12V battery
Diagnose the 14V converter
Check connections and wiring harnesses
Read additional fault codes
Update software if necessary
Repair only from an authorized dealer

Related codes

P0A8A P0A8C P0A8D