OBD Code P0563

System Voltage High

What’s mean?

OBD2 Code P0563 Definition:
The battery supplies electricity to the ECM even when the ignition switch is OFF. This electricity allows the ECM to store data such as 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 MIL and a DTC will be set.

Symptoms

Possible sumptoms of P0563
– Engine Light ON (or Service Engine Soon Warning Light) – Slow engine start – Low battery power

Possible Causes

Possible causes of P0563
– Loose or missing alternator drive belt – Faulty alternator – Battery defective – Open or short system voltage circuit The Error code is generally activated on detection of the following conditions: The P0563 code is detected when the battery voltage detected by the ECM is more than a calibrated value

Possible Solutions