Drive with caution — fix soon.
This code means the engine computer sees the system (battery) voltage staying outside the normal stable range, either too unsteady or out of spec. It usually points to a failing alternator or voltage regulator, a weak battery, or bad connections and grounds. It's commonly fixed by servicing the charging system, replacing the battery, or repairing the wiring.
$100 – $600
Varies by vehicle and root cause.
Usually yes for short trips, but it's not a code to ignore. Unstable voltage can cause stalling and stress your electronics, so have the charging system checked soon.
Repairs typically range from $100 to $600. Cleaning connections or replacing a battery is cheaper, while a new alternator or voltage regulator costs more with labor.
It's moderate. The car can still run, but unstable voltage may lead to stalling or a dead battery, and it can damage sensitive electronics if left unaddressed.
Yes. A weak or aging battery can't hold steady voltage and is a common trigger. A simple battery and charging test usually pinpoints whether it's the battery or the alternator.