P1587 – Throttle Motor Power Supply Fault (Nissan)

Description

The ECM detected a malfunction in the throttle motor power supply.

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Symptoms

  • Poor acceleration
  • Limp mode

Causes

  • Low voltage
  • Wiring issue
  • Relay fault

Diagnosis

  • Check voltage
  • Inspect wiring
  • Test relay

Repair

  • Repair wiring
  • Replace relay