What is the P0122 fault code?
2 Answers
P0122 fault code refers to a throttle or accelerator pedal position sensor malfunction. The solution is to clean the throttle, check if the accelerator pedal sensor's connector is loose, and inspect for short or open circuits in the wiring. After inspection and repair, use a diagnostic tool to clear the fault code. A fault code is a code generated after a car malfunction is detected by the computer, helping technicians accurately locate and repair the faulty component. The throttle is a controllable valve that regulates air intake into the engine. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture, which then burns to produce work.
The P0122 trouble code indicates an issue with the throttle position sensor circuit voltage input being too low. This typically occurs when the sensor signal falls below the normal range, and possible causes include internal sensor damage, short circuits or open circuits leading to abnormal current flow, loose or corroded connectors, or a faulty ECU control unit. While driving, I've encountered this situation where the car exhibits symptoms like insufficient engine power, jerky acceleration, unstable idle, and even the illumination of the check engine light. Long-term neglect may also lead to poor fuel economy or more severe engine problems. To diagnose it, I recommend first confirming the trouble code with an OBD scanner, checking if the sensor voltage is below 0.5 volts, and testing circuit continuity and fuses if necessary. To avoid trouble, it's more convenient to visit a professional repair shop early for a fix, as the sensor itself isn't expensive but replacing it requires some technical skill.
