Unlocking the Power of P0123 Your Comprehensive Resource

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here - Throttle Position Sensor/P0123 - After noticing some rough shifting ... I hear this is an electrical issue but the voltage to the TPS is 4.95v and the ground is solid against the battery at 12.35v. P0123 Throttle Position Sensor ... Unplugged throttle body while replacing valve cover gaskets. Broke one of the tabs on the connector. Now I get ... The P0123 code means the PCM sees the voltage as too high in the TPS circuitry. The TPS uses the 5 volt reference circuit to provide it's signal to the PCM. The P0123 code is a generic OBD-II code that indicates a problem with the Throttle Pedal Position Sensor (TPPS) or the Throttle Position Sensor ... Code P0123, which is a high TPS voltage. I used my meter and check the voltage and the car is reading at 4.8v at pin 3 and around 5.0v at pin 1 which is over ... 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. A P0123 trouble code means that the PCM has recorded a reading from the TPS that exceeds the normal 4.5 volts for more than two seconds. The code is TPS related so a new throttle body should fix the issue since it is built in to the throttle body itself. 1. Turn the ignition key to the on (NOT start) position. 2. Press the gas pedal to the floor and HOLD for five seconds. 3. Turn the key to the " ...