AutoCodes – Buick – U0210 Buick

U0210 Buick Code - Lost Communication With Rear Seat Heating 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 Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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: U0210 Buick indicates Lost Communication With Rear Seat Heating Control Module.
Common causes: Common causes include Faulty Rear Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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.

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Code Popularity 639

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 U0210 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 Rear Seat Heating Control Module has not been received.

OBDII Code U0210 Buick - Lost Communication With Rear Seat Heating Control Module - AutoCodes.com — U0210 Buick Code - Lost Communication With Rear Seat Heating Control Module

What does this mean?

What are the Possible Causes of the DTC U0210 Buick?

Faulty Rear Seat Heating Control Module
Rear Seat Heating Control Module harness is open or shorted
Rear Seat Heating Control Module circuit poor electrical connection

How to Fix the DTC U0210 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 U0210 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 U0210 Buick Code

1. What does the OBDII code U0210 mean on a Buick?

U0210 indicates that the vehicle's main control module has lost communication with the rear seat heating control module.

2. What are common symptoms of the U0210 code on a Buick?

Symptoms may include the rear seat heater not functioning, warning lights on the dashboard, or intermittent operation of the heating system.

3. What causes the U0210 code to appear?

Common causes include a faulty rear seat heating control module, wiring issues such as damaged or corroded connections, or a malfunction in the vehicle's communication network.

4. Is the U0210 code serious?

While itâ€™s not critical for vehicle operation, it can affect passenger comfort. If ignored, it could indicate broader communication or wiring issues.

5. How do you diagnose the U0210 code on a Buick?

Technicians typically use a scan tool to check for related codes, inspect the wiring and connectors to the rear seat heating module, and verify the module's functionality.

6. Can a software update fix the U0210 code?

In some cases, reprogramming or updating the software for the rear seat heating control module or the vehicle's main control module may resolve the issue.

7. How can I fix the U0210 code on my Buick?

Repairs may involve replacing a faulty rear seat heating control module, repairing damaged wiring, or cleaning corroded connectors.

8. Can I drive my Buick with a U0210 code?

Yes, the vehicle is still drivable, but passengers may experience reduced comfort if the rear seat heating system is not working.

9. How much does it cost to fix a U0210 code on a Buick?

Repair costs can vary widely depending on whether the issue is with the module, wiring, or connectors. Expect costs ranging from $100 for minor wiring repairs to $500 or more for module replacement.

10. Can a dead battery cause the U0210 code?

Yes, a dead or weak battery can disrupt communication between modules, potentially triggering the U0210 code.