logo

DTC P0122

25.12.2024
Enter the error code and car brand
logo
P0122
Vehicle engine and/or automatic transmission
Code: P0122 - Throttle/Pedal Position Sensor/Switch "A" Circuit Low

This error code applies to a wide range of vehicles compatible with OBD-II (Toyota, Renault, Nissan, Hyundai, Volkswagen, Ford, Mercedes-Benz, BMW, Chery, Audi, etc.) and is primarily related to the throttle position sensor and its voltage. This error message suggests that sensor A is detecting low voltage, possibly between 0.17 V and 0.20 V. The appearance of this message indicates that the sensor is not functioning properly and requires either replacement or repair. However, the repair procedure may vary depending on the make and model of the vehicle.

Causes of OBD P0122

Although the possible solutions to the problem depend on your specific vehicle, the causes of error P0122 are generally associated with one of four potential issues.

  • First, the throttle position sensor may be improperly installed, leading to inaccurate readings and poor connections.
  • Second, the sensor may detect a short circuit in the wiring connecting it to the ground wire or another wire.
  • Third, the entire unit may be faulty, leading to inaccurate voltage readings.
  • Finally, the engine control unit (ECU) may be damaged, meaning that the throttle position sensor is actually in normal condition.
dtc p0122

How to Fix Error Code P0122?

To fix the P0122 error, you must first locate circuit A. This information can be found in your vehicle's repair manual. Next, you need to check the sensor for any damage and inspect the connections and wiring for signs of damage. Then, check the sensor's voltage. If it is too low, you'll likely need to replace the part. However, if it has been replaced recently, you may need to calibrate the sensor to the correct position. While one of these solutions should work, it’s also possible that the problem is intermittent, meaning it’s not constant. If you suspect this is the case, pay close attention to inspecting the wiring, looking for areas where it might be rubbing or grounding out.

Conclusion

The P0122 OBD-II scanner error has several possible causes and solutions. Unfortunately, you may not be able to fix the issue on your own. Diagnosing problems with the electrical and computer components of your car can be complex. However, ignoring the problem is not a solution, as it can lead to further damage. Therefore, if you can’t find a solution, it’s advisable to seek help from an experienced mechanic.

The following error codes are often searched for
Comments on the article

OBD P0122 code analysis and solutions

The page presents a detailed analysis of code P0122 for Opel, Renault, VW (Volkswagen), Ford, Peugeot, Mitsubishi, Skoda, BMW, Citroën, Toyota, Lada, Honda, Kia, and other models to analyze probable causes and solutions related to obd-ii errors, with focus on the issue. We provide engineering documentation and approaches for diagnostics to identify and clarify the matter effectively. Our resource is designed to be a comprehensive source of information on OBD 2 errors, providing you with the necessary tools for successful repair and maintenance of auto. If during the repair of OBD 2 errors you need to purchase parts, don’t forget to visit Avtopro!