AutoCodes – Cadillac – U1130 Cadillac

U1130 Cadillac Code - Lost Communications With Remote Playback Device-CD Changer

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Remote Playback Device-CD Changer (CDX), Remote Playback Device-CD Changer harness is open or shorted, Remote Playback Device-CD Changer 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: U1130 Cadillac indicates Lost Communications With Remote Playback Device-CD Changer.
Common causes: Common causes include Faulty Remote Playback Device-CD Changer (CDX), Remote Playback Device-CD Changer harness is open or shorted, Remote Playback Device-CD Changer 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 516

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1130 Cadillac Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1130 is set.

OBDII Code U1130 Cadillac - Lost Communications With Remote Playback Device-CD Changer - AutoCodes.com — U1130 Cadillac Code - Lost Communications With Remote Playback Device-CD Changer

What does this mean?

What are the Possible Causes of the DTC U1130 Cadillac?

Faulty Remote Playback Device-CD Changer (CDX)
Remote Playback Device-CD Changer harness is open or shorted
Remote Playback Device-CD Changer circuit poor electrical connection

How to Fix the DTC U1130 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 U1130 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.

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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 U1130 Cadillac Code

1. What are the common symptoms of OBDII code U1130 in a Cadillac related to lost communication with the remote playback device (CD changer)?

- Common symptoms may include the CD changer not responding, the audio system not recognizing the CD changer, or error messages related to the CD changer on the display.

2. What are some possible causes of OBDII code U1130 in a Cadillac indicating lost communication with the CD changer?

- Possible causes may include a faulty CD changer, wiring issues between the CD changer and audio system, a malfunctioning audio control module, or a communication network issue.

3. How can I diagnose the OBDII code U1130 in a Cadillac related to the CD changer communication problem?

- Diagnosis typically involves checking the connections between the CD changer and the audio system, testing the CD changer functionality, inspecting the wiring for damage, and using a diagnostic scan tool to identify the communication issue.

4. Are there any simple repair tips for resolving the U1130 code in a Cadillac due to lost communication with the CD changer?

- You can start by checking and securing the connections between the CD changer and the audio system, ensuring all wiring is intact and properly connected. Resetting the audio system or performing a software update may also help resolve the issue.

5. Can a DIY enthusiast fix the U1130 code related to the CD changer communication issue in a Cadillac?

- While basic checks like inspecting connections and wiring can be done by DIY enthusiasts, diagnosing and repairing complex communication issues may require specialized diagnostic tools and expertise, best left to professional technicians.

6. Is it safe to continue driving with the OBDII code U1130 indicating communication loss with the CD changer in a Cadillac?

- While the code itself may not affect the drivability of the vehicle, it is recommended to address the underlying communication issue promptly to prevent potential audio system malfunctions or future problems with the CD changer.

7. How much does it typically cost to repair the U1130 code related to lost communication with the CD changer in a Cadillac?

- The cost of repair can vary depending on the exact cause of the communication issue. Simple fixes like reconnecting wires may be inexpensive, while replacing a faulty CD changer or audio control module could be more costly.

8. Can the U1130 code in a Cadillac be triggered by a malfunctioning remote playback device other than a CD changer?

- Yes, the code can also be triggered by communication problems with other remote playback devices, such as a DVD player or MP3 player, connected to the audio system in a Cadillac.

9. Are there any preventive measures to avoid encountering the U1130 code related to lost communication with the CD changer in a Cadillac?

- Regularly checking the connections and condition of the CD changer and associated wiring, as well as following the manufacturer's maintenance recommendations for the audio system, can help prevent communication issues leading to this code.

10. Will resetting the audio system or disconnecting the battery clear the U1130 code indicating communication loss with the CD changer in a Cadillac?

- Resetting the audio system or disconnecting the battery may temporarily clear the code, but if the underlying communication issue persists, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.