U0073 Chevrolet Code - Control Module Communication Bus OFF
Quick Answer
The U0073 code for Chevrolet indicates that there is a communication bus fault between different control modules in the vehicle. Common causes include Faulty control module, Loose or damaged wiring/connectors, Corrosion on connectors. 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
- U0073 Chevrolet indicates Control Module Communication Bus OFF.
- Common causes
- Common causes include Faulty control module, Loose or damaged wiring/connectors, Corrosion on connectors.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code U0073 Chevrolet Description
The U0073 code for Chevrolet indicates that there is a communication bus fault between different control modules in the vehicle. This means that the various electronic control modules (ECMs) and other onboard computers are not able to communicate with each other properly. This can lead to issues with the vehicle's overall performance and functionality, as different systems may not be able to work together as intended.
Common Causes of U0073 Chevrolet
- Faulty control module
- Loose or damaged wiring/connectors
- Corrosion on connectors
- Software issues
- Faulty communication network
Symptoms of U0073 Chevrolet
- Stalling or rough idling
- Poor acceleration
- Erratic shifting
- Dashboard warning lights illuminated
- Complete system failure
How to Fix U0073 Chevrolet
- Perform a thorough inspection of wiring and connectors for any damage or corrosion.
- Check for loose connections and secure them properly.
- Scan the vehicle's computer systems to identify the specific module causing the communication issue.
- Replace any faulty control modules or repair/reprogram software as needed.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix U0073 Chevrolet
The cost of repairing a U0073 code on a Chevrolet can vary depending on the specific cause of the issue. On average, you can expect to pay between $100 to $500 for parts and labor. However, the final cost may be higher if multiple control modules need to be replaced or if extensive diagnostic work is required. It's recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's specific needs and location.
Tech Notes for U0073 Chevrolet
2007-2010 Chevrolet Avalanche
2007-2010 Chevrolet Corvette
2007-2010 Chevrolet Silverado
2007-2010 Chevrolet Suburban
2007-2010 Chevrolet Tahoe
2008-2010 Chevrolet Silverado Hybrid
2008-2010 Chevrolet Tahoe Hybrid
Chevrolet Factory Service Bulletin OBDII Code U0073
User Submitted Video
Need more information about the U0073 Chevrolet code?
Need more information on how to fix the U0073 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U0073 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- U0073 2014 Chevrolet Silverado — Control Module Communication Bus OFF
- U0073 2015 Chevrolet Silverado — Control Module Communication Bus OFF
- U0073 2016 Chevrolet Silverado — Control Module Communication Bus OFF
- U0073 2017 Chevrolet Silverado — Control Module Communication Bus OFF
- U0073 2018 Chevrolet Silverado — Control Module Communication Bus OFF
Frequently Asked Questions about U0073 Chevrolet Code
1. What does the OBDII code U0073 for Chevrolet mean?
Code U0073 indicates that the control module communication bus in your Chevrolet is not operating as expected.
2. What are common symptoms of the U0073 code in a Chevrolet?
Common symptoms include loss of communication with various control modules, warning lights on the dashboard, and potential issues with vehicle performance.
3. What are possible causes of the U0073 code in a Chevrolet?
Potential causes of the U0073 code include a faulty control module, wiring issues, software glitches, or problems with the communication network within the vehicle.
4. How do I diagnose the U0073 code in my Chevrolet?
Diagnosing the U0073 code typically involves using a professional OBDII scanner to check for communication errors between control modules and inspecting the wiring and connections for any issues.
5. Can I drive my Chevrolet with the U0073 code present?
It is not recommended to drive your Chevrolet with the U0073 code present, as it may lead to further communication failures between control modules and potentially affect the vehicle's safety and performance.
6. How can I repair the U0073 code in my Chevrolet?
Repairing the U0073 code may involve fixing any wiring issues, replacing a faulty control module, updating software, or resetting the communication network in the vehicle.
7. Is the U0073 code specific to a certain Chevrolet model?
The U0073 code can appear in various Chevrolet models, such as Silverado, Equinox, Malibu, or Traverse, depending on the communication system used in the vehicle.
8. Can a DIY enthusiast fix the U0073 code in a Chevrolet?
While diagnosing the U0073 code may be possible for DIY enthusiasts with the right tools, repairing the underlying cause often requires professional expertise and specialized equipment.
9. How much does it cost to repair the U0073 code in a Chevrolet?
The cost of repairing the U0073 code in a Chevrolet can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs at a repair shop.
10. How can I prevent the U0073 code from reoccurring in my Chevrolet?
To prevent the U0073 code from coming back, it's essential to address any underlying issues promptly, perform regular maintenance, and keep the vehicle's communication system in good condition.
Discuss the causes and fixes for U0073 Chevrolet OBDII Code
-
Please follow the instructions on this bulletin ( http://goo.gl/iMu2Jh) . Problems triggering the U0073 are more than likely wiring issue. It may take some time and patience to sort it out.
-
Was sent to Autocodes.com to help me find answers to my "U" code issues. My mechanic says he ignores them! But doesn't help!
While Autocodes.com provides me with more information the part that is missing is I have no idea what to look for when I get answers like " check the wiring harness for bent, corroded etc pins"
I have no idea where the ECM is or even what to look for!
Appreciate the info supplied but if you can be more specific or even provide pictures/videos it would definitely improve the web site! Thanks -
Hello Steven, let me check if I can find more information, what model, year, and engine size is your Chevrolet?
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.