P2D9E

High Voltage System Voltage Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Reduced vehicle power
Speed limit
Check engine light comes on
The car may not start
Error message on the dashboard

Causes

Low voltage battery
Problems with the charging system
High voltage relay malfunction
Damage to high voltage wiring
Malfunction of the high-voltage system control unit

How to Fix

Check the charge of the high-voltage battery
Diagnose the charging system
Check high voltage relays and fuses
Inspect high-voltage wiring for damage
Check the high voltage system control unit
Repair only from an authorized dealer

Related codes

P2D9F P2DA0 P0AA6