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2003 INFINITI FX45
4.5L V8•AWD•AUTOMATIC•gas
9 active safety recalls on this vehicle — view recalls
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Repairs0Labor475Torque754Fluid7DTC1781Battery1Maintenance0Recalls9
P1122high severityPowertrain

Electric Throttle Control Actuator

on 2003 Infiniti FX45 4.5L V8 · AWD

What this code means

The electric throttle actuator position is out of specified range from the ECM command. Related to generic P2101/P2103 throttle actuator faults.

Symptoms

  • Check engine light on
  • Limp mode / reduced power
  • Poor throttle response

Common causes

  • Faulty throttle control actuator
  • Carbon-fouled throttle body
  • Wiring or connector fault
  • ECM driver failure

Diagnostic steps

  1. Confirm code P1122
  2. Clean throttle body and check plate
  3. Test actuator supply and signals
  4. Replace throttle body if needed
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