AutoCodes – Cadillac – U0134 Cadillac

U0134 Cadillac Code - Lost Communication With Rear Power Steering Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Rear Power Steering Control Module, Rear Power Steering Control Module harness is open or shorted, Rear 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
U0134 Cadillac indicates Lost Communication With Rear Power Steering Control Module.
Common causes
Common causes include Faulty Rear Power Steering Control Module, Rear Power Steering Control Module harness is open or shorted, Rear 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 538
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 01, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code U0134 Cadillac Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Rear Power Steering Control Module has not been received.
OBDII Code U0134 Cadillac - Lost Communication With Rear Power Steering Control Module - AutoCodes.com
U0134 Cadillac Code - Lost Communication With Rear Power Steering Control Module

What are the Possible Causes of the DTC U0134 Cadillac?

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

How to Fix the DTC U0134 Cadillac?

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 U0134 Cadillac 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 U0134 Cadillac code?

Need more information on how to fix the U0134 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0134 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 U0134 Cadillac Code

1. What are the common symptoms of OBDII code U0134 in a Cadillac related to the Rear Power Steering Control Module?

The common symptoms include loss of power steering functionality in the rear of the vehicle, illuminated warning lights on the dashboard, and potential issues with steering control.

2. What are some possible causes of the U0134 code indicating lost communication with the Rear Power Steering Control Module in a Cadillac?

Potential causes include faulty wiring or connections, a malfunctioning power steering control module, software issues, or a problem with the vehicle's network communication system.

3. How can I diagnose the U0134 code in my Cadillac related to the Rear Power Steering Control Module?

Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the wiring and connections related to the power steering control module, and performing a network communication test to identify the source of the communication loss.

4. Is it safe to continue driving my Cadillac if the U0134 trouble code related to the Rear Power Steering Control Module is present?

It is not recommended to continue driving the vehicle with this code present, as it may lead to potential safety hazards due to loss of power steering functionality.

5. What are some repair tips for addressing the U0134 code indicating lost communication with the Rear Power Steering Control Module in a Cadillac?

Repair tips may include checking and repairing any damaged wiring or connections, resetting the power steering control module, updating software if necessary, and ensuring proper network communication within the vehicle.

6. Can a DIY enthusiast fix the U0134 code related to the Rear Power Steering Control Module in a Cadillac?

Depending on the extent of the issue, some DIY enthusiasts with automotive repair experience may be able to address the U0134 code by following repair procedures outlined in the vehicle's service manual.

7. How much does it typically cost to repair the U0134 code indicating lost communication with the Rear Power Steering Control Module in a Cadillac?

The cost of repair can vary depending on the underlying cause of the issue, but it may involve expenses for parts replacement, labor costs, and potential diagnostic fees from a professional mechanic.

8. Can the U0134 trouble code in a Cadillac be intermittent, causing the symptoms to come and go?

Yes, intermittent communication issues related to the Rear Power Steering Control Module can sometimes trigger the U0134 code sporadically, leading to intermittent symptoms in the vehicle.

9. Are there any recalls or service bulletins related to the U0134 code in Cadillacs with communication issues in the Rear Power Steering Control Module?

It is recommended to check with a Cadillac dealership or the manufacturer's website to see if there are any recalls or service bulletins addressing the U0134 trouble code in specific Cadillac models.

10. What steps should be taken if the U0134 code related to the Rear Power Steering Control Module persists after attempted repairs in a Cadillac?

If the code persists after attempted repairs, it is advisable to consult with a professional mechanic or dealership specializing in Cadillac vehicles for further diagnosis and repair to resolve the issue effectively.

Discuss the causes and fixes for U0134 Cadillac OBDII Code

Code U0134 Cadillac comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play