AutoCodes – Generic – U043A

U043A Code - Invalid Data Received From Suspension Control Module 'B'

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 Suspension Control Module 'B', Suspension Control Module 'B' harness is open or shorted, Suspension Control Module 'B' 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: U043A indicates Invalid Data Received From Suspension Control Module 'B'.
Common causes: Common causes include Faulty Suspension Control Module 'B', Suspension Control Module 'B' harness is open or shorted, Suspension Control Module 'B' 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 17,546

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 11, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U043A 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. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Suspension Control Module 'B' causing its integrity to be questioned.

OBDII Code U043A - Invalid Data Received From Suspension Control Module 'B' - AutoCodes.com — U043A Code - Invalid Data Received From Suspension Control Module 'B'

What does this mean?

What are the Possible Causes of the DTC U043A?

Faulty Suspension Control Module 'B'
Suspension Control Module 'B' harness is open or shorted
Suspension Control Module 'B' circuit poor electrical connection

How to Fix the DTC U043A?

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 U043A 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 U043A Code

1. What are the common symptoms of OBDII code U043A (Invalid Data Received From Suspension Control Module 'B')?

- Common symptoms include issues with the vehicle's suspension system, such as incorrect ride height, rough or bouncy ride, and warning lights on the dashboard.

2. What could cause OBDII code U043A to trigger?

- This code may be triggered by a faulty suspension control module 'B', wiring issues, a communication error between modules, or a software glitch.

3. How can I diagnose the cause of OBDII code U043A?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific details of the error, checking the suspension control module 'B' for faults, and inspecting the wiring for any damage.

4. Can driving with OBDII code U043A cause further damage to my vehicle?

- Continuing to drive with this code present may lead to further suspension system issues or potential safety hazards, so it is recommended to address the problem promptly.

5. What are some repair tips for fixing OBDII code U043A?

- Repair options may include reprogramming the suspension control module 'B', repairing or replacing damaged wiring, and ensuring all connections are secure and free of corrosion.

6. Is it safe to reset the OBDII code U043A without addressing the underlying issue?

- While resetting the code may temporarily turn off the warning light, it is important to diagnose and repair the root cause to prevent potential safety risks and further damage.

7. How much does it typically cost to repair OBDII code U043A?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a simple wiring repair to a more complex module replacement, potentially costing several hundred dollars.

8. Can a DIY enthusiast fix OBDII code U043A at home?

- Depending on the specific cause of the code, some DIY enthusiasts may be able to address the issue at home by following repair guides, but more complex issues may require professional assistance.

9. Will OBDII code U043A prevent my vehicle from passing an emissions test?

- Yes, if this code is present during an emissions test, it may cause your vehicle to fail, so it is essential to address and resolve the issue before attempting to pass an emissions test.

10. How common is OBDII code U043A in vehicles?

- This code is relatively uncommon compared to other OBDII codes but can still occur in vehicles equipped with a suspension control module 'B'.