AutoCodes – Buick – U2172 Buick

U2172 Buick Code - Lost Communication With Digital Radio Receiver

Quick Answer

Devices connected to the serial data circuits 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: U2172 Buick indicates Lost Communication 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 572

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 Jun 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2172 Buick 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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2172 Buick - Lost Communication With Digital Radio Receiver - AutoCodes.com — U2172 Buick Code - Lost Communication With Digital Radio Receiver

What does this mean?

What are the Possible Causes of the DTC U2172 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 U2172 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 U2172 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 U2172 Buick Code

1. What does the OBDII code U2172 mean on a Buick?

U2172 indicates a loss of communication between the vehicle's control module and the digital radio receiver.

2. What are the common symptoms of code U2172 in a Buick?

Symptoms may include the radio not functioning, no sound from speakers, intermittent audio issues, or a warning light on the dashboard.

3. What causes the U2172 code to appear on a Buick?

Common causes include a faulty digital radio receiver, damaged wiring or connectors, software glitches, or issues with the vehicle's communication network.

4. Can a weak battery cause the U2172 code in a Buick?

Yes, a weak or failing battery can disrupt communication between modules, potentially triggering the U2172 code.

5. How do I fix the U2172 error in my Buick?

Fixes may involve inspecting and repairing wiring or connectors, resetting the system, updating module software, or replacing the faulty digital radio receiver.

6. Is the U2172 code serious in a Buick?

While it does not affect drivability, it can impact the functionality of the audio system and may indicate broader communication network issues.

7. How can I diagnose the U2172 code in my Buick?

Use a diagnostic scan tool to confirm the code, check the wiring and connectors for damage or corrosion, and test the digital radio receiver for faults.

8. Can I clear the U2172 code without repairs?

Clearing the code with a scan tool may work temporarily, but if the underlying issue is not resolved, the code is likely to return.

9. Does the U2172 code affect other vehicle systems?

It primarily impacts the audio system, but unresolved communication issues can potentially lead to problems in other interconnected systems over time.

10. Should I take my Buick to a mechanic for the U2172 code?

If basic troubleshooting doesnâ€™t resolve the issue, a professional mechanic with specialized diagnostic tools should inspect and repair the problem.