Trouble code · Powertrain · Generic (all makes)

P0562 System Voltage Low

The engine computer is seeing lower voltage from the car's electrical system than it needs.

Safe to drive?
Drive with caution
Get it fixed soon
Scanner you need
Any OBD2 scanner
Even a basic code reader shows it
NHTSA complaints quoting it
12
Vehicle complaints, 2015–2025

Common causes

  • Weak or failing battery
  • Failing alternator
  • Loose or corroded battery terminals or grounds
  • Worn drive belt
  • Something draining the battery

Symptoms

  • Dim lights
  • Slow cranking
  • Flickering gauges
  • Battery light
  • Other modules setting odd codes

Can I drive with it?

Get the battery and charging system tested soon – low voltage can leave you stranded.

Tip: Most auto parts stores test batteries and alternators free – an easy first stop.

Which scanner reads it?

Any OBD2 scanner reads it. Live data showing system voltage with the engine running (about 13.5–14.5 volts is normal) quickly shows whether the alternator is charging.

Budget tools like the ANCEL AD310 read it; tools with live data and graphing – like the BlueDriver or OBDLink MX+ – help you find the cause. Not sure which fits you? Try the Find My Scanner quiz.

In the data

Of the vehicle complaints owners filed with NHTSA from 2015 to 2025, 12 quote P0562 – most often from Dodge, Jeep, Ford owners. Complaints lean toward serious problems, so treat this as a sign of how often the code turns up in real reports, not how often cars get it.

Both sources are compared on the Trends page.

General information to help you understand a code – not a diagnosis. Your car’s service information or a qualified mechanic has the final word. See how we research.