U0078 2017 Chevrolet Silverado Code - Control Module Communication Low Speed CAN Bus Off
Quick Answer
The low-speed General Motor Local Area Network (GMLAN) serial data bus is used to communicate information between the devices. 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
- U0078 2017 Chevrolet Silverado indicates Control Module Communication Low Speed CAN 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.
Code U0078 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC U0078 2017 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 U0078 2017 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 U0078 2017 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 U0078 2017 Chevrolet Silverado code?
Need more information on how to fix the U0078 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about U0078 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code U0078 in a 2017 Chevrolet Silverado?
- Common symptoms include issues with the vehicle's communication network, such as dashboard warning lights, loss of communication with control modules, and erratic behavior of vehicle systems.
2. What does the OBDII code U0078 indicate in a 2017 Chevrolet Silverado?
- The code U0078 indicates a problem with the control module communication on the Low Speed CAN Bus, which is a network that allows various control modules in the vehicle to communicate with each other.
3. What are the possible causes of OBDII code U0078 in a 2017 Chevrolet Silverado?
- Possible causes include damaged wiring or connectors in the CAN Bus network, faulty control modules, software issues, low battery voltage, or water damage.
4. How can I diagnose the OBDII code U0078 in my 2017 Chevrolet Silverado?
- Diagnosing the code typically involves using a professional OBDII scanner to retrieve the specific fault codes, checking the wiring and connectors in the CAN Bus network, and testing the control modules for proper communication.
5. Can I still drive my 2017 Chevrolet Silverado with the OBDII code U0078 present?
- It is not recommended to drive the vehicle with the code U0078 present, as it can lead to further communication issues between control modules and potentially affect the vehicle's performance and safety systems.
6. How can I repair OBDII code U0078 in my 2017 Chevrolet Silverado?
- Repairing the code may involve repairing or replacing damaged wiring or connectors in the CAN Bus network, checking and reprogramming control modules, ensuring proper battery voltage, and addressing any software issues.
7. Is it necessary to reset the OBDII code U0078 after repairing the issue in a 2017 Chevrolet Silverado?
- Yes, it is recommended to reset the code using an OBDII scanner after repairing the underlying issue. This will clear the fault code and allow you to monitor if the problem reoccurs.
8. Can extreme weather conditions cause OBDII code U0078 in a 2017 Chevrolet Silverado?
- Yes, extreme weather conditions such as exposure to water or moisture can potentially cause the code U0078 by damaging the wiring or connectors in the CAN Bus network.
9. Are there any preventive measures to avoid OBDII code U0078 in a 2017 Chevrolet Silverado?
- Regularly inspecting the wiring and connectors in the CAN Bus network, keeping the vehicle's electrical system well-maintained, and avoiding exposure to extreme weather conditions can help prevent the occurrence of the code U0078.
10. How long does it typically take to repair OBDII code U0078 in a 2017 Chevrolet Silverado?
- The repair time for the code U0078 can vary depending on the specific cause of the issue and the extent of the repairs needed. It may take anywhere from a few hours to a full day at a professional repair shop.
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