P1528 – Throttle Control Motor Power Supply High (Nissan)

Description

The ECM detected high power supply to the throttle control motor.

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Symptoms

  • High idle
  • Surging

Causes

  • Short to power
  • Relay failure
  • ECM error

Diagnosis

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

Repair

  • Repair wiring
  • Replace relay