U1120 Code - Lost Wheel Distance Message
Quick Answer
The Powertrain Control Module (PCM) receives the vehicle speed signal over the Controlled Area Network (CAN) C bus from the Anti-Lock Brake System (ABS) Module. Common causes include Faulty Anti-Lock Brake System (ABS) Module, Anti-Lock Brake System (ABS) Module harness is open or shorted, Anti-Lock Brake System (ABS) Module 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
- U1120 indicates Lost Wheel Distance Message .
- Common causes
- Common causes include Faulty Anti-Lock Brake System (ABS) Module, Anti-Lock Brake System (ABS) Module harness is open or shorted, Anti-Lock Brake System (ABS) Module 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.
Code U1120 Description
What are the Possible Causes of the DTC U1120?
- Faulty Anti-Lock Brake System (ABS) Module
- Anti-Lock Brake System (ABS) Module harness is open or shorted
- Anti-Lock Brake System (ABS) Module circuit poor electrical connection
How to Fix the DTC U1120?
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 U1120 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 U1120 code?
Need more information on how to fix the U1120 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U1120 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- U1120 Chrysler — Lost Wheel Distance Message
- U1120 Dodge — Lost Wheel Distance Message
- U1120 Jeep — Lost Wheel Distance Message
- U1120 RAM — Lost Wheel Distance Message
Frequently Asked Questions about U1120 Code
1. What is OBDII code U1120?
Code U1120, also known as the Lost Wheel Distance Message, is a communication error between the anti-lock braking system (ABS) and the powertrain control module (PCM).
2. What are the symptoms of a U1120 code?
Common symptoms of a U1120 code include the ABS warning light illuminating on the dashboard, traction control issues, and potential loss of communication with the wheel speed sensors.
3. What are the possible causes of a U1120 code?
The U1120 code can be triggered by issues such as damaged wiring or connectors, faulty wheel speed sensors, a malfunctioning ABS module, or a communication error between modules.
4. How is a U1120 code diagnosed?
Diagnosing a U1120 code typically involves using a professional OBDII scanner to retrieve the fault code, checking for any related ABS or traction control codes, and inspecting the ABS system components for any visible damage.
5. Can a U1120 code be fixed at home?
While some DIY enthusiasts may attempt to address a U1120 code at home by checking wiring connections and sensor integrity, diagnosing and repairing communication errors between modules often requires professional diagnostic equipment and expertise.
6. How much does it cost to repair a U1120 code?
The cost of repairing a U1120 code can vary depending on the underlying cause. Simple fixes like replacing a faulty sensor may cost a few hundred dollars, while more complex issues involving module replacements could cost upwards of a thousand dollars.
7. Will a U1120 code cause my vehicle to fail an emissions test?
In most cases, a U1120 code related to the ABS system should not cause your vehicle to fail an emissions test. However, it is essential to address the issue promptly to ensure proper functioning of the ABS and traction control systems.
8. Can driving with a U1120 code cause further damage to my vehicle?
Continuing to drive with a U1120 code may not necessarily cause immediate harm to your vehicle, but it can potentially impact the performance of the ABS and traction control systems, compromising your safety on the road.
9. How long does it take to repair a U1120 code?
The repair time for a U1120 code can vary depending on the complexity of the underlying issue. Simple fixes may be completed within a few hours, while more involved repairs could take a day or longer, especially if parts need to be ordered.
10. Is it safe to drive with a U1120 code illuminated?
While it may be safe to drive with a U1120 code in some cases, it is recommended to have the issue diagnosed and repaired as soon as possible to ensure the proper functioning of your vehicle's ABS and traction control systems.
Discuss the causes and fixes for U1120 OBDII Code
Code U1120 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
