AutoCodes – Buick – U1137 Buick

U1137 Buick Code - Lost Communications With Digital Radio Receiver

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Digital Radio Receiver (DRR), Digital Radio Receiver harness is open or shorted, Digital Radio Receiver 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: U1137 Buick indicates Lost Communications With Digital Radio Receiver.
Common causes: Common causes include Faulty Digital Radio Receiver (DRR), Digital Radio Receiver harness is open or shorted, Digital Radio Receiver 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 511

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 U1137 Buick 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) U1137 is set.

OBDII Code U1137 Buick - Lost Communications With Digital Radio Receiver - AutoCodes.com — U1137 Buick Code - Lost Communications With Digital Radio Receiver

What does this mean?

What are the Possible Causes of the DTC U1137 Buick?

Faulty Digital Radio Receiver (DRR)
Digital Radio Receiver harness is open or shorted
Digital Radio Receiver circuit poor electrical connection

How to Fix the DTC U1137 Buick?

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 U1137 Buick 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 U1137 Buick Code

1. What are the common symptoms of OBDII code U1137 in a Buick related to the lost communications with the digital radio receiver?

- Common symptoms include loss of radio function, poor sound quality, and issues with Bluetooth or other audio connectivity features.

2. What are some possible causes of the U1137 code indicating lost communications with the digital radio receiver in a Buick?

- Potential causes may include a faulty digital radio receiver module, wiring issues, a defective antenna, or a communication network problem.

3. How can I diagnose the U1137 code in my Buick related to the digital radio receiver communication issue?

- To diagnose the issue, you can start by checking the connections to the digital radio receiver, inspecting the wiring for any damage, and using a diagnostic scanner to retrieve error codes and data from the system.

4. Are there any common repair tips for fixing the U1137 code in a Buick due to lost communications with the digital radio receiver?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections to the digital radio receiver, and resetting the system to see if the code reappears.

5. Can the U1137 code related to lost communications with the digital radio receiver in a Buick cause other problems in the vehicle?

- While the primary impact of this code is on the radio system, unresolved communication issues can sometimes affect other vehicle systems connected to the network.

6. Is it safe to continue driving my Buick with the U1137 OBDII code indicating lost communications with the digital radio receiver?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent any potential long-term problems with the audio system or related components.

7. How much does it typically cost to repair the U1137 code in a Buick caused by lost communications with the digital radio receiver?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a simple wiring repair cost to a more significant expense if a module replacement is necessary.

8. Can the U1137 code be triggered intermittently in a Buick, or does it usually indicate a persistent problem with the digital radio receiver communication?

- The code can sometimes be triggered intermittently due to temporary communication glitches, but if it keeps reoccurring, it likely indicates an ongoing issue that needs to be addressed.

9. Are there any preventive measures to avoid encountering the U1137 code in a Buick related to lost communications with the digital radio receiver?

- Regularly checking the condition of the audio system components, ensuring proper wiring connections, and promptly addressing any radio system malfunctions can help prevent this code from appearing.

10. Can a DIY enthusiast with some automotive experience attempt to fix the U1137 code caused by lost communications with the digital radio receiver in a Buick?

- Depending on the exact cause, some simple repairs like checking and reconnecting wires may be DIY-friendly, but more complex issues may require professional diagnosis and repair to ensure proper resolution.