AutoCodes – Jeep – P0123 2004 Jeep Liberty

P0123 2004 Jeep Liberty Code - Throttle Position Sensor/Accelerator Position Pedal Circuit High Input

Quick Answer

The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0123 2004 Jeep Liberty indicates Throttle Position Sensor/Accelerator Position Pedal Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 15,080
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0123 2004 Jeep Liberty 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.
OBDII Code P0123 2004 Jeep Liberty - Throttle Position Sensor/Accelerator Position Pedal Circuit High Input - AutoCodes.com
P0123 2004 Jeep Liberty Code - Throttle Position Sensor/Accelerator Position Pedal Circuit High Input

What are the Possible Causes of the DTC P0123 2004 Jeep Liberty?

  • 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 DTC P0123 2004 Jeep Liberty?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0123 2004 Jeep Liberty code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0123 2004 Jeep Liberty code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0123 2004 Jeep Liberty Code

1. What are common symptoms of OBDII code P0123 in a 2004 Jeep Liberty?

The common symptoms of OBDII code P0123 in a 2004 Jeep Liberty include issues with acceleration, rough idling, poor fuel economy, and a lack of response from the throttle pedal.

2. What does the OBDII code P0123 indicate in a 2004 Jeep Liberty?

OBDII code P0123 in a 2004 Jeep Liberty indicates a high input signal from the throttle position sensor or accelerator pedal position sensor circuit.

3. What are the possible causes of OBDII code P0123 in a 2004 Jeep Liberty?

Possible causes of OBDII code P0123 in a 2004 Jeep Liberty include a faulty throttle position sensor, accelerator pedal position sensor, damaged wiring or connectors, or issues with the engine control module.

4. How can I diagnose the OBDII code P0123 in my 2004 Jeep Liberty?

To diagnose OBDII code P0123 in a 2004 Jeep Liberty, you can use an OBDII scanner to retrieve the trouble code and then inspect the throttle position sensor, accelerator pedal position sensor, wiring, and connectors for any visible damage or faults.

5. Can I still drive my 2004 Jeep Liberty with OBDII code P0123?

It is not recommended to drive your 2004 Jeep Liberty with OBDII code P0123, as it can lead to issues with acceleration and overall vehicle performance. It's best to address the problem promptly to avoid further damage.

6. How can I repair OBDII code P0123 in my 2004 Jeep Liberty?

Repairing OBDII code P0123 in a 2004 Jeep Liberty typically involves replacing the faulty throttle position sensor or accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

7. Is it possible to reset the OBDII code P0123 in a 2004 Jeep Liberty without repairing the issue?

While you can clear the OBDII trouble code P0123 with an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as the issue may persist and potentially cause further damage to your vehicle.

8. How much does it cost to fix OBDII code P0123 in a 2004 Jeep Liberty?

The cost to fix OBDII code P0123 in a 2004 Jeep Liberty can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is advisable to consult a mechanic for an accurate estimate.

9. Will OBDII code P0123 cause my 2004 Jeep Liberty to fail an emissions test?

Yes, OBDII code P0123 can cause your 2004 Jeep Liberty to fail an emissions test, as it indicates a problem with the throttle position sensor or accelerator pedal position sensor circuit, which can impact the vehicle's emissions control system.

10. How can I prevent OBDII code P0123 from recurring in my 2004 Jeep Liberty?

To prevent OBDII code P0123 from recurring in your 2004 Jeep Liberty, it's crucial to perform regular maintenance checks, address any issues with the throttle position sensor or accelerator pedal position sensor promptly, and ensure proper care of the vehicle's electrical system.

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