AutoCodes – Generic – U024B

U024B Code - Lost Communication With Seat Control Module 'G'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Seat Control Module 'G', Seat Control Module 'G' harness is open or shorted, Seat Control Module 'G' 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: U024B indicates Lost Communication With Seat Control Module 'G'.
Common causes: Common causes include Faulty Seat Control Module 'G', Seat Control Module 'G' harness is open or shorted, Seat Control Module 'G' 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.

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Code Popularity 1,202

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U024B Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Seat Control Module 'G' has not been received.

OBDII Code U024B - Lost Communication With Seat Control Module 'G' - AutoCodes.com — U024B Code - Lost Communication With Seat Control Module 'G'

What does this mean?

What are the Possible Causes of the DTC U024B?

Faulty Seat Control Module 'G'
Seat Control Module 'G' harness is open or shorted
Seat Control Module 'G' circuit poor electrical connection

How to Fix the DTC U024B?

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 U024B 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 U024B code?

Need more information on how to fix the U024B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U024B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U024B Ford — Lost Communication With Seat Control Module 'G'
U024B Lincoln — Lost Communication With Seat Control Module 'G'
U024B Mercury — Lost Communication With Seat Control Module 'G'

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 U024B Code

1. What are the common symptoms of OBDII code U024B?

- Common symptoms include non-functional seat controls, inability to adjust seat positions, and warning lights on the dashboard related to the seat control module.

2. What are the possible causes of OBDII code U024B?

- The code U024B is typically caused by a malfunction in the wiring, connectors, or the seat control module itself. It could also be triggered by a faulty communication network within the vehicle.

3. How can I diagnose the issue triggering code U024B?

- To diagnose the issue, you can start by inspecting the wiring and connectors related to the seat control module. Using a diagnostic scanner to retrieve additional trouble codes and checking the communication network for faults can also be helpful.

4. Can I still drive my vehicle with OBDII code U024B?

- It is not recommended to drive your vehicle with code U024B as it may affect the functionality of the seat controls and compromise safety. It is best to address the issue promptly.

5. How can I repair OBDII code U024B?

- Repairing code U024B involves fixing the underlying issue causing the lost communication with the seat control module. This may include repairing or replacing damaged wiring, connectors, or the seat control module itself.

6. Can a DIY enthusiast fix OBDII code U024B?

- While some DIY enthusiasts may have the skills to diagnose and repair code U024B, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure safety and effectiveness.

7. Is it expensive to fix OBDII code U024B?

- The cost of fixing code U024B can vary depending on the root cause of the issue and the necessary repairs. It is advisable to obtain estimates from automotive professionals to determine the exact cost.

8. Will resetting the OBDII code U024B resolve the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the lost communication with the seat control module. It is essential to diagnose and repair the issue to prevent further problems.

9. Can extreme weather conditions trigger OBDII code U024B?

- Extreme weather conditions such as extreme heat or moisture can potentially affect the wiring and connectors associated with the seat control module, leading to communication issues and triggering code U024B.

10. How often does OBDII code U024B occur in vehicles?

- Code U024B is relatively rare compared to more common OBDII codes, but it can still occur in vehicles with electronic seat control modules, especially in older or high-mileage vehicles.