Unveiling the Secrets of P0123 A Comprehensive Guide

I got the code P0123 so I figured I'd check the Tps sensor voltage and it was reading fine (has power, signal, ground) also checked it with throttle open and ... The TPS (Throttle Position Sensor) is a potentiometer that is mounted to the throttle body. It detects the throttle blade angle. As the throttle blade moves, ... P0123 - Throttle/Pedal Position Sensor/Switch Circuit High has been detected. Van runs great. No noticeable issues. It sounds like the spot check is OK, Try wiggling and moving the wires. The computer only has to see the high voltage for .5 seconds to set the code. Your TPS itself is bad or the wiring and connection are bad. If you are going to replace the TPS, check the wiring and connector to the current one first. The TPS sensor should produce around .5v at full closed throttle plate and around 4.5v with the pedal all the way down. Usually if the TPS or APPS has issues it throws the 2121 or 2122. The TPS has two circuits. One is the 5 volt for actual position to control the RPM. Dodge/Ram Diesel Tech - DTC P0123 Throttle/Pedal Position Sensor A Circuit High Input - Can anyone explain what might be the cause DTC P0123 ... The jeep will start fine and idle for a few seconds, then the RPMs will fluctuate and eventually stall. Not too sure what would cause this though. OBD-II code P0123 means that there is a high input in the Throttle/Pedal Position Sensor/Switch 'A' Circuit. This sensor provides input from ...