Mazda DTC P1120 – Throttle Position Sensor out of Range Low
DTC P1120 meaning on Mazda
The DTC P1120 for Mazda indicates that the Throttle Position Sensor (TPS) is reporting a low voltage signal that is out of the expected range.
Mazda DTC P1120 symptoms
Some common symptoms of the DTC P1120 on a Mazda may include:
- Check Engine Light illuminated
- Reduced engine power
- Poor acceleration response
- Stalling or rough idling
Mazda DTC P1120 causes
The potential causes of the DTC P1120 on a Mazda can include:
- Faulty Throttle Position Sensor (TPS)
- Wiring or connector issues in the TPS circuit
- Throttle body malfunction
Mazda DTC P1120 seriousness
The DTC P1120 should be addressed promptly as it can lead to drivability issues and potential safety concerns if the throttle response is affected.
How to diagnose DTC P1120 on Mazda
To diagnose the DTC P1120 on a Mazda, a mechanic may perform the following steps:
- Use a scan tool to retrieve the trouble codes and freeze frame data
- Inspect the TPS wiring and connector for any damage or corrosion
- Test the TPS using a multimeter to check for proper voltage readings
- Check the throttle body for any obstructions or malfunctions
How to fix DTC P1120 on Mazda
To fix the DTC P1120 on a Mazda, the following steps may be taken:
- Replace the Throttle Position Sensor (TPS) if it is found to be faulty
- Repair any damaged wiring or connectors in the TPS circuit
- Clean or replace the throttle body if necessary
How to erase DTC P1120 on Mazda
To erase the DTC P1120 on a Mazda, the code can be cleared using a scan tool that has the capability to reset trouble codes. Once the issue has been addressed and fixed, the code can be cleared to turn off the Check Engine Light.
Recommended tools for Mazda 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.