P1561 – Battery Voltage Too Low (Nissan)

Description

The ECM detected battery voltage lower than the specified threshold.

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Symptoms

  • Hard start
  • Dim lights

Causes

  • Weak battery
  • Poor charging
  • Wiring issue

Diagnosis

  • Measure battery voltage
  • Check alternator
  • Inspect wiring

Repair

  • Replace battery
  • Repair wiring

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