P0563 – System Voltage High

Description

The ECM detects system voltage higher than expected.

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Symptoms

  • Battery light on
  • Burning smell
  • Bulbs blowing

Causes

  • Overcharging alternator
  • Faulty regulator
  • Wiring issues

Diagnosis

  • Check charging voltage
  • Inspect alternator
  • Check wiring

Repair

  • Replace alternator
  • Repair wiring