P0562 Code: System Voltage Low
🟠 Moderate severity · drivable
Drivable in the short term, but low voltage can cause stalling and electrical faults, so diagnose the charging system soon.
What P0562 means
The engine computer is seeing system voltage below about 10 volts. The vehicle's electrical system normally runs at roughly 13.5–14.5 volts with the engine running, so a low reading points to a battery or charging problem.
Symptoms
- Check engine light is on
- Battery or charging warning light
- Dim headlights
- Hard or slow cranking
- Electrical accessories acting up
Common causes
- most common: Weak or failing battery
- common: Failing alternator
- common: Loose or corroded battery terminals
- less common: Parasitic battery drain
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean and tighten the battery terminals | Yes | $0–20 |
| Test the battery and replace it if weak | Yes | $100–250 |
| Test the alternator and replace it if failing | Mechanic | $200–500 |
Frequently asked questions
Can I drive with a P0562 code?
Short distances, yes, but the car could stall or fail to start. Get the battery and alternator tested soon.
What is the most common cause of P0562?
A weak battery or failing alternator. A free battery-and-charging test at most parts stores will usually tell you which.
How much does it cost to fix a P0562?
A battery is $100–$250; an alternator is $200–$500 installed. Cleaning terminals may cost nothing.
Related codes
P0563
P0563 Code: System Voltage High
P0560P0560 Code: System Voltage Malfunction
P0620P0620 Code: Generator Control Circuit Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.