Infiniti DTC P1120 – Secondary Throttle Position Sensor (STPS)
DTC P1120 meaning on Infiniti
The DTC P1120 on an Infiniti indicates an issue with the Secondary Throttle Position Sensor (STPS). This sensor is responsible for monitoring the position of the secondary throttle plate in the throttle body.
Infiniti DTC P1120 symptoms
Common symptoms associated with DTC P1120 on an Infiniti may include:
- Check Engine Light illuminated
- Reduced engine performance
- Engine hesitation or stalling
Infiniti DTC P1120 causes
The DTC P1120 on an Infiniti may be triggered by various factors, including:
- Failed Secondary Throttle Position Sensor (STPS)
- Wiring or connector issues related to the STPS
- Throttle body problems
Infiniti DTC P1120 seriousness
While the DTC P1120 may not always result in immediate drivability issues, it is important to address this problem promptly to prevent potential engine performance issues and further damage.
How to diagnose DTC P1120 on Infiniti
Diagnosing DTC P1120 on an Infiniti typically involves the following steps:
- Use a scan tool to retrieve the trouble codes
- Inspect the wiring and connectors related to the STPS
- Test the STPS for proper operation
How to fix DTC P1120 on Infiniti
To fix DTC P1120 on an Infiniti, you may need to:
- Replace the faulty Secondary Throttle Position Sensor (STPS)
- Repair any damaged wiring or connectors
- Clean or replace the throttle body if necessary
How to erase DTC P1120 on Infiniti
To erase the DTC P1120 code on an Infiniti, you can:
Recommended tools for Infiniti diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.