AutoCodes – Chevrolet – U18BA Chevrolet

U18BA Chevrolet Code - Lost Communication With Power Steering Control Module On High Speed CAN Bus

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering Control 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: U18BA Chevrolet indicates Lost Communication With Power Steering Control Module On High Speed CAN Bus.
Common causes: Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering Control 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.

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Code Popularity 510

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U18BA Chevrolet Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.

OBDII Code U18BA Chevrolet - Lost Communication With Power Steering Control Module On High Speed CAN Bus - AutoCodes.com — U18BA Chevrolet Code - Lost Communication With Power Steering Control Module On High Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U18BA Chevrolet?

Faulty Power Steering Control Module
Power Steering Control Module harness is open or shorted
Power Steering Control Module circuit poor electrical connection

How to Fix the DTC U18BA Chevrolet?

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 U18BA Chevrolet 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 U18BA Chevrolet Code

1. What are the common symptoms of OBDII code U18BA in a Chevrolet related to lost communication with the power steering control module on the high-speed CAN bus?

- Common symptoms may include loss of power steering assist, illuminated power steering warning light on the dashboard, and potential issues with steering responsiveness.

2. What are some possible causes for the U18BA trouble code indicating lost communication with the power steering control module in a Chevrolet?

- Possible causes include a faulty power steering control module, damaged wiring or connectors in the CAN bus system, issues with the high-speed CAN bus network, or a malfunctioning power steering system.

3. How can I diagnose the U18BA code indicating lost communication with the power steering control module in my Chevrolet?

- Diagnosing this code may involve performing a thorough inspection of the power steering control module, checking the wiring and connectors in the high-speed CAN bus network, and using a diagnostic scanner to communicate with the affected module.

4. What steps can I take to repair the U18BA trouble code related to lost communication with the power steering control module on the high-speed CAN bus in my Chevrolet?

- Repair steps may include repairing or replacing damaged wiring or connectors, resetting the power steering control module, reprogramming the module if necessary, and clearing the trouble code from the vehicle's computer system.

5. Is it safe to drive my Chevrolet if the U18BA code indicating lost communication with the power steering control module is present?

- It is generally not recommended to drive the vehicle with this code present, as it may lead to sudden loss of power steering assist, which can affect the vehicle's handling and safety.

6. Can a DIY enthusiast fix the U18BA trouble code related to lost communication with the power steering control module in a Chevrolet?

- While some basic diagnostic steps can be taken by DIY enthusiasts, repairing this issue may require specialized tools and expertise, so it's recommended to consult a professional mechanic for proper diagnosis and repair.

7. Are there any recalls or technical service bulletins related to the U18BA code in Chevrolet vehicles?

- It's advisable to check with Chevrolet dealerships or online resources for any recalls or technical service bulletins related to this specific trouble code to see if there are known issues or remedies provided by the manufacturer.

8. How can I prevent the U18BA trouble code indicating lost communication with the power steering control module in my Chevrolet from occurring again?

- Regular maintenance checks, ensuring proper wiring connections, and addressing any power steering system issues promptly can help prevent the recurrence of this trouble code in the future.

9. Will resetting the trouble codes using a diagnostic scanner solve the U18BA code issue in my Chevrolet?

- Resetting the trouble codes may temporarily clear the warning light, but it's important to diagnose and address the root cause of the communication loss with the power steering control module to prevent further issues.

10. Can the U18BA code cause other problems in my Chevrolet besides power steering issues?

- While the primary impact of this code is related to the power steering control module, it may also affect other vehicle systems that rely on data communication through the high-speed CAN bus network, potentially leading to additional malfunctions or warning lights on the dashboard.