P0560 System Voltage
What does P0560 mean?
P0560 — System Voltage. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects system voltage. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0560
- Weak or failing battery
- Failing alternator or voltage regulator
- Loose or corroded battery cables
- Open or shorted charging control circuit
- High resistance at the battery or grounds
How to fix P0560
- Measure battery and charging voltage at idle and with loads
- Load-test the battery and inspect the cables
- Test the alternator output and the charging signal
- Clean tight battery terminals and grounds
- Replace the battery, alternator, or repair wiring as found