2018 Pontiac P0562: What It Means & Is It Safe to Drive?
P0562 on the 2018 Pontiac: System Voltage Low. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The PCM has detected that system voltage is below the acceptable threshold. Usually points to a failing battery, alternator, or a poor ground connection.
Common causes on the 2018 Pontiac
- Weak or failing battery
- Failing alternator not producing sufficient output
- Poor battery cable or ground connections
- Parasitic draw draining the battery
Symptoms
- Check Engine Light
- Dim headlights
- Electrical accessories acting erratically
- Hard starting or slow cranking
Typical fixes
- Load-test battery and replace if weak
- Test alternator output and replace if low
- Clean battery terminals and ground connections
Repair cost range
For a 2018 Pontiac, repairs for P0562 typically fall between $100 and $500, depending on the root cause and labor rates in your area.
Known issues on Pontiac
Pontiac P0562 low voltage is typically a failing battery or alternator. On G8 with the LS engine, the high-output alternator is generally reliable but the battery can degrade. Check for excessive parasitic drain—the G8's BCM can develop drain issues on high-mileage vehicles.
Most commonly affected models