Engine-CodesJeep – P0120 Jeep

P0120 Jeep Code - Electronic Throttle Control Motor Performance

Quick Answer

The P0120 code for Jeep vehicles indicates an issue with the Electronic Throttle Control (ETC) motor performance. Common causes include Faulty Electronic Throttle Control motor, Wiring or connector issues in the ETC system, Dirty throttle body affecting motor performance. 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 Electronic Throttle Control motor, Wiring or connector issues in the ETC system, Dirty throttle body affecting motor performance.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0120 Jeep Description

The P0120 code for Jeep vehicles indicates an issue with the Electronic Throttle Control (ETC) motor performance. The ETC system controls the throttle opening electronically, rather than with a traditional cable. This code typically means that the ETC motor is not functioning as it should, leading to potential performance issues with the vehicle.

OBDII Code P0120 Jeep - Electronic Throttle Control Motor Performance
P0120 Jeep Code - Electronic Throttle Control Motor Performance

Common Causes of P0120 Jeep

  1. Faulty Electronic Throttle Control motor.
  2. Wiring or connector issues in the ETC system.
  3. Dirty throttle body affecting motor performance.
  4. Issues with the throttle position sensor.
  5. Electronic control module (ECM) failure affecting ETC motor communication.

Symptoms of P0120 Jeep

  1. Reduced acceleration or lack of response when pressing the gas pedal.
  2. Rough idle or stalling when coming to a stop.
  3. Check Engine light illuminated on the dashboard.
  4. Vehicle going into "limp mode" with reduced power.

How to Fix P0120 Jeep

  1. Start by inspecting the ETC motor, wiring, and connectors for any visible damage or loose connections.
  2. Clean the throttle body to ensure smooth operation of the ETC motor.
  3. Test the throttle position sensor to determine if it is functioning correctly or needs replacement.
  4. Check the ECM for any error codes or malfunctions that could be affecting the ETC motor.
  5. If necessary, replace the ETC motor with a new unit to resolve the performance issue.

Cost to Fix P0120 Jeep

The cost of repairing the Electronic Throttle Control motor performance issue can vary depending on the specific cause and the price of parts and labor. On average, this repair can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get quotes from multiple shops to find the best price.

When is the Code Detected?

The throttle position sensor signals in throttle body do not correlate to the map sensor signal

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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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