The P2122 code indicates a low voltage signal from the throttle or pedal position sensor or switch “D” circuit.
P2122 Throttle/Pedal Position Sensor/Switch “D” Circuit Low
Code symptoms P2122.
1. Engine hesitation or lack of responsiveness when the accelerator pedal is pressed.
2. Difficulty engaging or maintaining the desired speed while driving.
3. Illumination of the Check Engine Light on the dashboard.
4. Poor fuel efficiency or sudden changes in fuel consumption.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2122.
1. Faulty throttle position sensor.
2. Electrical issues.
3. ECU or software malfunction.
4. Throttle body problems.
5. Environmental factors.
Code Solutions P2122.
1. Check the throttle or accelerator pedal position sensor or switch circuit wiring for any damage or loose connections.
2. Inspect the throttle position sensor or switch for any faults or malfunctions and replace if necessary.
3. Perform a throttle position sensor relearn procedure using a diagnostic scanner.
4. Check the PCM (powertrain control module) for any software updates that may address the P2122 trouble code.
5. If the issue persists, seek assistance from a professional mechanic to diagnose and repair the throttle or pedal position sensor circuit.