Description
OBD-II Trouble Code Description for P0123 Dodge
Throttle/Pedal Position Sensor/Switch “A” Circuit High
What does this mean?
OBD2 Code P0123 Dodge definition:
A P0123 Dodge code means that the the car’s computer has detected that the TPS (throttle position sensor) is reporting too high a voltage.
Symptoms
Possible sumptoms of OBD code P0123 Dodge
Rough idle High idle Surging other symptoms may also be present
Causes
Possible causes of OBD code P0123 Dodge
A code P0123 Dodge may mean that one or more of the following has happened: TPS not mounted securely TPS circuit short to ground or another wire Faulty TPS Damaged computer (PCM)
Possible Solutions
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, carefully inspect all wiring and connectors that lead to the TPS. More than likely the problem is with the TPS wiring. Check the voltage at the TPS (refer to a service manual for your vehicle for this specific information). If the voltage spikes or is too high (over 4.65 volts with key on, engine off), then that is indicative of a problem. Carefully trace each wire from the TPS wiring harness to check for breaks, rubbing against other components, etc.