What does code P1120 mean on Infiniti vehicles?
The ECU detects a malfunction in the secondary throttle position sensor signal.
OBD-II Code Infiniti
P1120 — Infiniti — Secondary Throttle Position Sensor Malfunction
The ECU detects a malfunction in the secondary throttle position sensor signal.
Common symptoms
- Erratic acceleration
- poor throttle response
Possible causes
- Faulty STPS sensor
- wiring issues
Initial recommendation
Perform throttle body diagnostics and test secondary TPS operation.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Infiniti code P1120 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands