P2E91

Battery Charger B Internal Power Supply Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Dashboard warning
Problems starting the engine
Reduced battery charging efficiency
Unstable operation of the vehicle's electrical system

Causes

Charger B fault
Damage to the power supply
Problems with the charger control unit
Short circuit in wiring
Battery fault

How to Fix

Check the charger power circuit
Diagnose the status of charger B
Replace the faulty charger if necessary
Check and repair damaged wiring

Related codes