P2E31

Battery Charger B Module Supply Voltage High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check engine light comes on
Reduced battery charging efficiency
System transition to emergency mode
Vehicle power limitation
Error message on display

Causes

Battery charging module B faulty
Problems with high voltage battery
Energy management system malfunction
Damage to wiring or connectors
Software error in the control system

How to Fix

Diagnostics of battery charging module B
Checking the condition of the high-voltage battery
Inspect wiring and connectors for damage
Control system software update
Replacing the charging module if necessary

Related codes

P2E30 P2E32 P0AA6