AutoCodes – Jeep – P0122 2004 Jeep Liberty

P0122 2004 Jeep Liberty Code - Throttle Position Sensor/Accelerator Position Pedal Circuit Low 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
P0122 2004 Jeep Liberty indicates Throttle Position Sensor/Accelerator Position Pedal Circuit Low 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 12,117
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 P0122 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 P0122 2004 Jeep Liberty - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input - AutoCodes.com
P0122 2004 Jeep Liberty Code - Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input

What are the Possible Causes of the DTC P0122 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 P0122 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 P0122 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 P0122 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 P0122 2004 Jeep Liberty Code

1. What does the OBDII code P0122 mean for a 2004 Jeep Liberty?

The OBDII code P0122 indicates an issue with the Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input in a 2004 Jeep Liberty.

2. What are the common symptoms of a P0122 code in a 2004 Jeep Liberty?

Common symptoms of a P0122 code in a 2004 Jeep Liberty include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."

3. What are the potential causes of a P0122 code in a 2004 Jeep Liberty?

Potential causes of a P0122 code in a 2004 Jeep Liberty include a faulty throttle position sensor, damaged wiring or connectors in the accelerator pedal circuit, or a problem with the Powertrain Control Module (PCM).

4. How can I diagnose a P0122 code in my 2004 Jeep Liberty?

To diagnose a P0122 code in a 2004 Jeep Liberty, you can use an OBDII scanner to read the code and check the throttle position sensor's voltage output. Inspect the wiring and connectors for any damage, and perform a visual inspection of the throttle body and accelerator pedal assembly.

5. What are some repair tips for fixing a P0122 code in a 2004 Jeep Liberty?

Repair tips for fixing a P0122 code in a 2004 Jeep Liberty include replacing the throttle position sensor, repairing or replacing damaged wiring and connectors, and resetting the PCM after making any repairs.

6. Can a P0122 code in a 2004 Jeep Liberty cause damage if left untreated?

If left untreated, a P0122 code in a 2004 Jeep Liberty can potentially cause poor engine performance, decreased fuel efficiency, and further damage to the engine over time. It is recommended to address the issue promptly.

7. Is it safe to drive with a P0122 code in a 2004 Jeep Liberty?

It is not recommended to drive a 2004 Jeep Liberty with a P0122 code, as it can lead to unsafe driving conditions due to potential acceleration issues and engine performance problems. It is best to address the problem before driving the vehicle.

8. How much does it typically cost to repair a P0122 code in a 2004 Jeep Liberty?

The cost to repair a P0122 code in a 2004 Jeep Liberty can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.

9. Can a DIY enthusiast fix a P0122 code in a 2004 Jeep Liberty?

Depending on their skill level and tools available, a DIY enthusiast may be able to fix a P0122 code in a 2004 Jeep Liberty by replacing the throttle position sensor or repairing damaged wiring. However, complex issues may require professional assistance.

10. How long does it take to repair a P0122 code in a 2004 Jeep Liberty?

The repair time for a P0122 code in a 2004 Jeep Liberty can vary based on the exact cause of the issue and the repair process involved. In general, it may take anywhere from 1 to 3 hours to address the problem.

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