Possible causes

– Battery defective
– Loose or missing alternator drive belt
– Faulty alternator
– Open or short system voltage circuit

Tech notes

Higher than expected voltage problems are most likely caused by bad voltage regulator. The voltage regulator is part of the alternator.

When is the code detected?

The Engine Control Module (ECM) has detected that the electrical system voltage level is out of range.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0563 Description

The battery supplies electricity to the Engine Control Module (ECM) even when the ignition switch is OFF. This electricity allows the ECM to store data such as Detected Trouble Code (DTC) history, freeze frame data, fuel trim values and other data. If the battery voltage falls below a minimum level, the ECM will conclude that there is a fault in the power supply circuit. The next time the engine starts, the ECM will turn on the Malfunction Indicator Light (MIL) and a DTC will be set.

P0563 Information for specific makes

P0563 ACURA
P0563 FORD
P0563 HONDA
P0563 KIA
P0563 MITSUBISHI
P0563 VOLKSWAGEN
P0563 CHEVROLET
P0563 DODGE
P0563 JEEP
P0563 HYUNDAI
P0563 ISUZU
P0563 SUZUKI
P0563 BUICK
P0563 CHRYSLER
P0563 CADILLAC
P0563 GMC
P0563 PONTIAC
P0563 SATURN