Acura DTC P1121 – Throttle Position Lower Than Expected
DTC P1121 meaning on Acura
The Diagnostic Trouble Code (DTC) P1121 on an Acura indicates that the throttle position sensor is reporting a lower than expected voltage signal to the Engine Control Module (ECM). This means that the actual position of the throttle plate does not match the position that the ECM expects based on the sensor readings.
Acura DTC P1121 symptoms
Symptoms of DTC P1121 on an Acura may include:
- Reduced engine power
- Poor acceleration
- Engine stalling
- Check Engine Light illuminated
Acura DTC P1121 causes
Common causes of DTC P1121 on an Acura include:
- Faulty throttle position sensor
- Dirty or faulty throttle body
- Wiring or connector issues in the throttle position sensor circuit
- ECM software or hardware problems
Acura DTC P1121 seriousness
DTC P1121 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this code may result in poor engine performance and could potentially lead to further damage to engine components.
How to diagnose DTC P1121 on Acura
To diagnose DTC P1121 on an Acura, you can perform the following steps:
- Use a scan tool to retrieve the DTC and freeze frame data
- Inspect the throttle position sensor and its wiring for any visible damage
- Clean the throttle body and check for proper operation
- Perform a voltage test on the throttle position sensor
- Check for any related ECM software updates
How to fix DTC P1121 on Acura
To fix DTC P1121 on an Acura, you can try the following solutions:
- Replace the throttle position sensor if faulty
- Clean the throttle body to ensure smooth operation
- Repair any damaged wiring or connectors in the throttle position sensor circuit
- Update the ECM software if necessary
How to erase DTC P1121 on Acura
To erase DTC P1121 on an Acura, you can use a scan tool to clear the code after addressing the underlying issue. Once the problem has been fixed, clearing the code will reset the Check Engine Light and allow the ECM to monitor the system for any new faults.
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