P1547 – Throttle Control Motor Relay Short (Nissan)

Description

The ECM detected a short circuit in the throttle control motor relay.

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Symptoms

  • High idle
  • Limp mode

Causes

  • Short to power
  • Relay failure
  • Wiring damage

Diagnosis

  • Check wiring for shorts
  • Test relay
  • Scan throttle data

Repair

  • Repair wiring
  • Replace relay