The P0123 trouble code indicates a high input issue within the throttle or pedal position sensor or switch A circuit. This code typically points to problems with the sensor responsible for monitoring the position of the throttle or pedal, affecting the engine’s performance and responsiveness.
Throttle/Pedal Position Sensor/Switch A Circuit High Input
Code symptoms P0123.
1. Unresponsive throttle.
2. Decreased engine performance.
3. Difficulty accelerating or maintaining speed.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0123.
1. Faulty throttle or pedal position sensor or switch.
2. High input or voltage within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0123.
1. Inspect and replace the throttle or pedal position sensor or switch if it is faulty.
2. Check and repair any high input or voltage issues in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.