AutoCodes – Buick – U0237 Buick

U0237 Buick Code - Lost Communication With Multimedia Player Interface 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 Multimedia Player Interface Module, Multimedia Player Interface Module harness is open or shorted, Multimedia Player Interface 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: U0237 Buick indicates Lost Communication With Multimedia Player Interface Module.
Common causes: Common causes include Faulty Multimedia Player Interface Module, Multimedia Player Interface Module harness is open or shorted, Multimedia Player Interface 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 544

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0237 Buick 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 Multimedia Player Interface Module has not been received.

OBDII Code U0237 Buick - Lost Communication With Multimedia Player Interface Module - AutoCodes.com — U0237 Buick Code - Lost Communication With Multimedia Player Interface Module

What does this mean?

What are the Possible Causes of the DTC U0237 Buick?

Faulty Multimedia Player Interface Module
Multimedia Player Interface Module harness is open or shorted
Multimedia Player Interface Module circuit poor electrical connection

How to Fix the DTC U0237 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 U0237 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 U0237 Buick Code

1. What does the OBDII code U0237 mean on a Buick?

The U0237 code indicates a loss of communication between the vehicle's main control modules and the Multimedia Player Interface Module.

2. What are common symptoms of the U0237 code in a Buick?

Symptoms can include the infotainment system not responding, blank screens, loss of audio, or Bluetooth and media playback issues.

3. What causes the U0237 code to appear?

Common causes include a faulty Multimedia Player Interface Module, wiring issues such as damaged or loose connections, or software glitches in the vehicle's communication network.

4. Can a weak battery cause the U0237 code?

Yes, a weak or failing battery can disrupt communication between modules, potentially triggering the U0237 code.

5. How do I diagnose the U0237 code on my Buick?

Start by checking the wiring and connections to the Multimedia Player Interface Module, scanning for related codes, and ensuring the battery and module power supply are adequate.

6. Can the U0237 code cause other issues in my Buick?

While it primarily affects the multimedia system, it can also interfere with overall convenience features if the communication fault impacts multiple modules.

7. How do I fix the U0237 code on my Buick?

Repairs may involve reconnecting or replacing damaged wiring, updating software, or replacing the Multimedia Player Interface Module if it is faulty.

8. Is it safe to drive with the U0237 code active?

Yes, the code typically does not affect drivability, but it may impair multimedia system functionality and could be distracting.

9. Can an update to the infotainment system solve the U0237 code?

Yes, if the issue is software-related, updating the infotainment system or reprogramming the module can resolve the problem.

10. What tools are needed to troubleshoot the U0237 code?

Youâ€™ll need an OBDII scanner to read codes, a multimeter to check wiring and power supply, and possibly a diagnostic tool capable of module communication testing.