P0563: System Voltage High
Short answer: P0563 means “System Voltage High”. It is a standard OBD-II code, so the basic meaning is the same on every car. Below is what it means on each of the 6 cars we cover, with a link to the full page for each car.
Standard OBD-II code Same meaning on all cars (SAE J2012).
P0563 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | System Voltage High | low |
| Toyota Corolla (11th gen, E170) | System Voltage High | medium |
| Toyota Corolla (10th gen, E140) | System Voltage High | medium |
| Honda City (5th gen, GM2) | System Voltage High | medium |
| Honda Civic (10th gen, FC) | System Voltage High | medium |
| Suzuki Wagon R (Pakistan, K10B) | System Voltage High | medium |
Symptoms
- Check engine light on
- Red battery light On
- Transmission may not shift
- Engine may not start or if it does start, may stall out and die
- Lower fuel economy
Likely causes
- Potential causes for this code to set are
- High resistance in the cable between the alternator and battery - possible
- Low resistance/open circuit between the alternator and the control module - possible
- Alternator faulty – most common
- Failed PCM - unlikely
What to check, in order
- Check battery terminals and earth straps for corrosion or looseness
- Measure battery voltage with the engine off and running
- Check the alternator and its belt
- Clear the code and test-drive
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.