Engine-Codes - Jeep - P0123 2002 JEEP LIBERTY

P0123 2002 JEEP LIBERTY Code - Throttle Position Sensor/Accelerator Position Pedal Circuit High Input

- Code Popularity: 13,895 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P0123 2002 JEEP LIBERTY Code?

  • 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 to Fix the P0123 2002 JEEP LIBERTY Code?

Start by checking 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.

|What is the cost to diagnose the P0123 2002 JEEP LIBERTY code?

Labor: 1.0

The cost to diagnose the P0123 2002 JEEP LIBERTY code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0123 2002 JEEP LIBERTY code detected?

The P0122 code will set if Throttle Position Sensor (TPS) voltage drops below .078 volts for the period of 0.48 seconds

|What are P0123 2002 JEEP LIBERTY code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0123 2002 JEEP LIBERTY Code Mean?

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.

Throttle Position Sensor/Accelerator Position Pedal Circuit High Input

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