Throttle Position Sensor/Accelerator Position Pedal Circuit High Input
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P0123 JEEP Possible Causes
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How do I fix code P0123 JEEP?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
User Submitted Video
Cost of diagnosing the P0123 JEEP code
The cost of diagnosing the P0123 JEEP code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The P0123 code will set if the monitored TPS volts rise above 4.94 volts for the peroid of 0.48 seconds
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0123 JEEP Description
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Powertrain Control Module (PCM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the PCM.
Idle position of the throttle valve is determined by the PCM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.