P1128 – Throttle Control Motor Circuit (Nissan)

Description

The ECM detected an electrical malfunction in the throttle control motor circuit.

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Symptoms

  • Limp mode
  • Poor acceleration
  • Unstable idle
  • Throttle not responding
  • Check engine light

Causes

  • Open or shorted wiring
  • Faulty throttle motor
  • Connector corrosion
  • ECM driver fault

Diagnosis

  • Test wiring continuity
  • Inspect motor
  • Check connectors
  • Scan live data

Repair

  • Repair wiring
  • Replace throttle motor
  • Clean connectors

Related Problems

Related Fault Codes