System Voltage High
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P0563 Possible Causes
- Battery defective
- Loose or missing alternator drive belt
- Faulty alternator
- Open or short system voltage circuit
How do I fix code P0563?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- Higher than expected voltage problems are most likely caused by bad voltage regulator. The voltage regulator is part of the alternator.
Cost of diagnosing the P0563 code
The cost of diagnosing the P0563 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The Engine Control Module (ECM) has detected that the electrical system voltage level is out of range.
Possible 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 Diagnostic 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.