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2007 INFINITI FX45
4.5L V8•AWD•AUTOMATIC•gas
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor476Torque2094Fluid7DTC1900Battery1Maintenance0Recalls4
P1120moderate severityPowertrain

Secondary Throttle Position Sensor Circuit

on 2007 Infiniti FX45 4.5L V8 · AWD

What this code means

Fault in the secondary TPS circuit for additional airflow control.

Symptoms

  • CEL
  • Reduced power
  • Erratic throttle
  • Limp mode

Common causes

  • Faulty secondary TPS
  • Damaged wiring
  • Contaminated throttle body

Diagnostic steps

  1. Test sensor voltage
  2. Inspect wiring
  3. Clean throttle body
  4. Compare to specs

Repair notes

Replace secondary TPS.

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