AutoCodes – Buick – U0268 Buick

U0268 Buick Code - Lost Communication With Right Front Short Range Radar Sensor 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 Right Front Short Range Radar Sensor Module, Right Front Short Range Radar Sensor Module harness is open or shorted, Right Front Short Range Radar Sensor 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: U0268 Buick indicates Lost Communication With Right Front Short Range Radar Sensor Module.
Common causes: Common causes include Faulty Right Front Short Range Radar Sensor Module, Right Front Short Range Radar Sensor Module harness is open or shorted, Right Front Short Range Radar Sensor 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 481

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 U0268 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 Right Front Short Range Radar Sensor Module has not been received.

OBDII Code U0268 Buick - Lost Communication With Right Front Short Range Radar Sensor Module - AutoCodes.com — U0268 Buick Code - Lost Communication With Right Front Short Range Radar Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0268 Buick?

Faulty Right Front Short Range Radar Sensor Module
Right Front Short Range Radar Sensor Module harness is open or shorted
Right Front Short Range Radar Sensor Module circuit poor electrical connection

How to Fix the DTC U0268 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 U0268 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 U0268 Buick Code

What does OBDII code U0268 mean on a Buick?

Code U0268 indicates a loss of communication with the Right Front Short Range Radar Sensor Module, which is part of the vehicleâ€™s advanced driver assistance systems.

What are the common symptoms of code U0268 on a Buick?

Symptoms may include warning lights for driver assistance systems, issues with adaptive cruise control, lane-keeping assist, or parking assist, and possible failure of radar-related functions.

What causes code U0268 on a Buick?

Causes can include a damaged radar sensor module, wiring issues like broken or corroded connections, software glitches, or a failed control module.

Can a dirty or obstructed radar sensor cause code U0268?

Yes, dirt, debris, or physical obstructions on the radar sensor can interfere with its operation and lead to communication errors like U0268.

How do you diagnose code U0268 on a Buick?

Diagnosis typically involves scanning for codes, checking the radar sensor module and wiring for damage, and inspecting the physical condition of the radar sensor for obstructions.

Can code U0268 affect driving safety?

Yes, U0268 can impact systems like adaptive cruise control and collision avoidance, which are designed to enhance safety, potentially increasing risk during driving.

Is code U0268 specific to Buicks?

No, U0268 is a generic OBDII code that can appear in other vehicles equipped with short-range radar systems, though its location and impact may vary.

How can code U0268 be repaired?

Repairs may include cleaning or replacing the radar sensor, repairing damaged wiring or connectors, or updating the software in related control modules.

Can software updates fix code U0268 on a Buick?

In some cases, a software update for the radar system or vehicle modules can resolve communication errors like U0268.

Should I take my Buick to a dealership for code U0268?

If basic troubleshooting doesnâ€™t resolve the issue, visiting a dealership or qualified repair shop is recommended, as they have specialized tools to diagnose and repair radar-related faults.