AutoCodes – Jeep – P0120 Jeep

P0120 Jeep Code - Electronic Throttle Control Motor Performance

Quick Answer

P0120 Jeep indicates Electronic Throttle Control Motor Performance. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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
P0120 Jeep indicates Electronic Throttle Control Motor Performance.
Common causes
Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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.
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Code Popularity 8,496
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 P0120 Jeep Description

OBDII Code P0120 Jeep - Electronic Throttle Control Motor Performance - AutoCodes.com
P0120 Jeep Code - Electronic Throttle Control Motor Performance

What are the Possible Causes of the DTC P0120 Jeep?

  • Faulty Throttle Position Sensor
  • Throttle Position Sensor circuit is open or shorted
  • Throttle Position Sensor poor electrical connection

How to Fix the DTC P0120 Jeep?

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 P0120 Jeep 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.

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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 P0120 Jeep Code

What does the OBDII code P0120 mean on a Jeep?

1. P0120 indicates an issue with the Throttle Position Sensor (TPS) circuit, specifically a malfunction in the sensor's ability to relay accurate throttle position data to the engine control module (ECM). 2.

What are the common symptoms of code P0120 on a Jeep?

Symptoms may include poor acceleration, hesitation, engine stalling, reduced fuel efficiency, illuminated Check Engine Light, or the vehicle entering limp mode. 3.

What causes code P0120 to trigger on a Jeep?

Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, a malfunctioning throttle body, or issues with the ECM. 4.

Can I drive my Jeep with a P0120 code?

Driving with a P0120 code is not recommended as it may cause reduced engine performance or unsafe driving conditions. Addressing the issue promptly is advised. 5.

How do I diagnose code P0120 on a Jeep?

Diagnosis involves checking the throttle position sensor for proper function, inspecting the wiring and connectors for damage, and using a scan tool to monitor TPS data for irregularities. 6.

How do I fix code P0120 on a Jeep?

Repairs may include replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning or replacing the throttle body, or reprogramming the ECM if necessary. 7.

How much does it cost to repair a P0120 code on a Jeep?

Repair costs can vary depending on the exact issue, but replacing a throttle position sensor typically costs between $100 and $300, including parts and labor. 8.

Can a dirty throttle body cause code P0120 on a Jeep?

Yes, a dirty or clogged throttle body can cause improper throttle position sensor readings, potentially triggering a P0120 code. Cleaning the throttle body may resolve the issue. 9.

Will clearing the P0120 code fix the problem on a Jeep?

Clearing the code will reset the Check Engine Light temporarily, but it won't fix the underlying issue. Proper diagnosis and repair are required to prevent the code from returning. 10.

What tools do I need to fix a P0120 code on a Jeep?

Tools may include a scan tool or code reader, a multimeter for testing electrical circuits, basic hand tools for sensor replacement, and possibly throttle body cleaner.

Discuss the causes and fixes for P0120 Jeep OBDII Code

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