What does P0562 mean?

The vehicle's electrical system voltage is below the normal range.

Is the battery or the alternator the cause of P0562?

Either can be. Test the battery first, then the charging output with the engine running.

Electrical and control module

P0562 — System Voltage Low

The ECU measures a system voltage below the normal range. Low voltage can make sensors and modules misbehave and may leave the car unable to start.

Severity: Medium

Common causes

Weak or failing battery
Failing alternator or loose drive belt
Corroded or loose battery terminals
Poor ground connection
Excessive electrical load

Symptoms

Dim lights and slow cranking
Warning lights on the dashboard
Electrical gremlins and multiple codes
Stalling

How to check

Test battery voltage: at rest about 12.4-12.7 V, and with the engine running about 13.8-14.7 V
Inspect terminals and ground straps for corrosion
Check the belt and perform an alternator output test
Check the battery with a load tester

Can you keep driving?

Drive only if charging is working; if the battery is not charging, the car can stop without warning. Repair it soon.

Frequently asked questions

What does P0562 mean?: The vehicle's electrical system voltage is below the normal range.
Is the battery or the alternator the cause of P0562?: Either can be. Test the battery first, then the charging output with the engine running.

General reference information. It does not replace a diagnosis on your own vehicle. The same code can have different causes depending on make, model year and engine; check the manufacturer's documentation or ask a technician with a scan tool.