P1562 – Battery Voltage Too High (Nissan)

Description

The ECM detected battery voltage higher than the specified threshold.

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Symptoms

  • Warning light
  • Electrical noise

Causes

  • Overcharging
  • Alternator fault
  • Regulator issue

Diagnosis

  • Check alternator output
  • Inspect regulator
  • Scan charging data

Repair

  • Replace alternator
  • Repair wiring