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U1120 Jeep Code - Lost Wheel Distance Message

Quick Answer

The U1120 Jeep code indicates a "Lost Wheel Distance Message" within the vehicle's network communication system. Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the wheel speed sensor circuit, Corrosion or debris affecting the wheel speed sensor. 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
U1120 Jeep indicates Lost Wheel Distance Message .
Common causes
Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the wheel speed sensor circuit, Corrosion or debris affecting the wheel speed sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code U1120 Jeep Description

The U1120 Jeep code indicates a "Lost Wheel Distance Message" within the vehicle's network communication system. This code typically points to a problem with the communication between the wheel speed sensors and the vehicle's control modules. Wheel speed sensors are crucial components that help the ABS (Anti-lock Braking System) and traction control systems function correctly by providing real-time data on the speed of each wheel.

OBDII Code U1120 Jeep - Lost Wheel Distance Message
U1120 Jeep Code - Lost Wheel Distance Message

Common Causes of U1120 Jeep

  1. Faulty wheel speed sensor
  2. Damaged wiring or connectors in the wheel speed sensor circuit
  3. Corrosion or debris affecting the wheel speed sensor
  4. Malfunctioning ABS control module
  5. Issues with the CAN (Controller Area Network) communication system

Symptoms of U1120 Jeep

  1. ABS warning light illuminated on the dashboard
  2. Traction control warning light activated
  3. Vehicle stability control system malfunction
  4. Inaccurate speedometer readings
  5. Increased stopping distance during braking

How to Fix U1120 Jeep

  1. Diagnose the specific wheel speed sensor causing the issue using a diagnostic scan tool.
  2. Inspect the wiring and connectors in the wheel speed sensor circuit for any damage or corrosion.
  3. Clean the wheel speed sensor and its mounting surface to ensure proper functionality.
  4. Replace the faulty wheel speed sensor if necessary.
  5. Reset the fault codes and perform a test drive to verify that the issue has been resolved.

Cost to Fix U1120 Jeep

The repair costs for addressing the U1120 Jeep code can vary depending on the specific cause of the issue and the labor rates in your area. On average, replacing a wheel speed sensor can cost between $100 and $300, including parts and labor. Additional costs may apply if there are wiring or control module issues that need to be addressed. It's essential to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Keep in mind that diagnostic time and labor rates can also impact the overall repair costs.

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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 U1120 Jeep Code

1. What does the OBDII code U1120 for Jeep mean?

The U1120 code in Jeep vehicles indicates a "Lost Wheel Distance Message" error, typically related to communication issues within the ABS system.

2. What are the common symptoms of a U1120 code in a Jeep?

Common symptoms of a U1120 code may include the ABS warning light being illuminated on the dashboard, loss of ABS functionality, and potential traction control issues.

3. What are the possible causes of a U1120 code in a Jeep?

The U1120 code in a Jeep can be caused by damaged wheel speed sensors, faulty ABS module, wiring issues, or communication problems between control modules.

4. How can I diagnose a U1120 code in my Jeep?

Diagnosing a U1120 code in a Jeep typically involves using an OBDII scanner to retrieve the code, checking the wheel speed sensors for proper operation, inspecting wiring for damage, and testing the ABS module for faults.

5. Can I still drive my Jeep with a U1120 code?

It is not recommended to drive a vehicle with an active U1120 code, as it may affect the ABS system's functionality and compromise overall safety. It's advisable to address the issue promptly.

6. How can I repair a U1120 code in my Jeep?

Repairing a U1120 code in a Jeep involves addressing the root cause, which could include replacing faulty wheel speed sensors, repairing damaged wiring, or reprogramming the ABS module. Professional diagnosis and repair are recommended.

7. Are there any simple DIY fixes for a U1120 code in a Jeep?

While some basic checks like inspecting the wheel speed sensor connections and fuses can be done by DIY enthusiasts, resolving a U1120 code often requires specialized tools and expertise, making professional assistance advisable.

8. How much does it cost to fix a U1120 code in a Jeep?

The cost of fixing a U1120 code in a Jeep can vary depending on the underlying issue, parts needed for replacement, and labor costs. It's recommended to obtain quotes from reputable mechanics or dealerships.

9. Can a U1120 code reset itself in a Jeep?

In some cases, a U1120 code may reset itself after the underlying issue is resolved. However, it's best to use an OBDII scanner to clear the code after repairs to ensure the problem is fully addressed.

10. Is the U1120 code in a Jeep a serious issue?

While a U1120 code may not always indicate a critical problem, it should be taken seriously as it affects the ABS system's functionality, potentially compromising vehicle safety. Prompt diagnosis and repair are recommended.

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