Trouble code
P0562
System Voltage Low
What P0562 means
The computer is seeing charging system voltage below the normal range while the engine is running.
Symptoms you may notice
- Dim lights
- Battery warning light
- Hard starting
- Multiple unrelated codes appearing at once
Common causes, cheapest first
- Failing alternator
- Worn or loose serpentine belt
- Corroded battery terminals or ground straps
- Failing battery no longer holding charge
Before you buy anythingLow voltage makes modules behave unpredictably and sets codes all over the car. Fix the charging system first, then clear everything and see what actually comes back.
What to do next
- Confirm the code with your own scan tool, or have it read free at a chain parts store.
- Decode your VIN so you know your exact engine and build date.
- Work down the causes above from cheapest to most expensive.
- Search NHTSA for a recall or service bulletin covering this symptom on your vehicle.
- Read the batteries buying guide before ordering.
P0562 is a generic OBD-II code, standardized across every make and model sold in the US from 1996 onward. The meaning is the same on any vehicle; the specific part and its location are not.
Parts
Parts commonly needed for P0562
These go to Amazon. We earn a commission if you buy, at no extra cost to you — see our affiliate disclosure. Which one you actually need depends on diagnosis — read the note above first.
Confirm fitment against your VIN on the listing page before ordering. A part that matches your year and model can still be wrong for your build date or engine code.