AutoCodes – Chevrolet – U007F 2018 Chevrolet Silverado

U007F 2018 Chevrolet Silverado Code - Control Module Communication FlexRay 1B Bus Off

Quick Answer

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. 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: U007F 2018 Chevrolet Silverado indicates Control Module Communication FlexRay 1B Bus Off.
Common causes: Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
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 227

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U007F 2018 Chevrolet Silverado Description

The devices connected to the object 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 devices when the ignition switch is in any position other than OFF. The object high-speed GMLAN serial data bus uses terminating resistors that are in parallel with the object high-speed GMLAN (+) and (-) circuits. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U007F 2018 Chevrolet Silverado - Control Module Communication FlexRay 1B Bus Off - AutoCodes.com — U007F 2018 Chevrolet Silverado Code - Control Module Communication FlexRay 1B Bus Off

What does this mean?

What are the Possible Causes of the DTC U007F 2018 Chevrolet Silverado?

Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U007F 2018 Chevrolet Silverado?

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 U007F 2018 Chevrolet Silverado 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.

Need more information about the U007F 2018 Chevrolet Silverado code?

Need more information on how to fix the U007F 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U007F 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 U007F 2018 Chevrolet Silverado Code

1. What does the OBDII code U007F mean on a 2018 Chevrolet Silverado?

The U007F code indicates a fault in the Control Module Communication FlexRay 1B Bus, meaning thereâ€™s an issue with communication between control modules over the FlexRay network.

2. What are common symptoms of the U007F code on a 2018 Silverado?

Symptoms may include the check engine light being illuminated, erratic vehicle performance, malfunctioning electronic systems, or a loss of communication with certain modules.

3. What causes the U007F code to appear on a Chevrolet Silverado?

Possible causes include damaged or corroded FlexRay wiring, a faulty control module, network termination issues, or low system voltage.

4. Can a weak battery cause the U007F code on my Silverado?

Yes, a weak or failing battery can cause voltage drops, potentially disrupting module communication and triggering the U007F code.

5. How do I fix the U007F code on a 2018 Chevrolet Silverado?

Repairs may involve inspecting and repairing FlexRay wiring, replacing damaged connectors, resetting or reprogramming control modules, or addressing power supply issues.

6. Is it safe to drive a Silverado with the U007F code?

Driving with this code may not be safe, as it can affect critical systems like stability control or braking. Itâ€™s best to diagnose and resolve the issue promptly.

7. How do I diagnose the U007F code on my Silverado?

Start by checking the battery and electrical system, inspecting FlexRay wiring for damage, and using a scan tool to identify which module isnâ€™t communicating properly.

8. Can a software update fix the U007F code on my Silverado?

In some cases, a software update for the affected control module may resolve communication issues, but this depends on the specific root cause.

9. What tools are needed to troubleshoot the U007F code?

Youâ€™ll need a diagnostic scan tool capable of reading manufacturer-specific codes, a multimeter for testing voltage, and a wiring diagram for the FlexRay network.

10. How much does it cost to repair the U007F code on a 2018 Chevrolet Silverado?

Repair costs vary but can range from $100 to $1,000 depending on whether the issue involves wiring repair, module replacement, or more complex diagnostics.