U007B 2014 Chevrolet Silverado Code - Control Module Communication High Speed Extension CAN Bus Off
Quick Answer
The U007B diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a problem with the Control Module Communication High Speed Extension CAN Bus being off. Common causes include Faulty control module responsible for the High Speed Extension CAN Bus communication, Damaged wiring or connectors in the communication network, Software glitch or programming error in one of the modules. 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
- U007B 2014 Chevrolet Silverado indicates Control Module Communication High Speed Extension CAN Bus Off.
- Common causes
- Common causes include Faulty control module responsible for the High Speed Extension CAN Bus communication, Damaged wiring or connectors in the communication network, Software glitch or programming error in one of the modules.
- 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 U007B 2014 Chevrolet Silverado Description
The U007B diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a problem with the Control Module Communication High Speed Extension CAN Bus being off. The Controller Area Network (CAN) Bus is a communication network that allows various modules in the vehicle to communicate with each other. The High Speed Extension CAN Bus is a specific part of this network that facilitates high-speed communication between modules. When this code is triggered, it means that there is a communication issue on this particular bus, which can lead to various problems within the vehicle.
Common Causes of U007B 2014 Chevrolet Silverado
- Faulty control module responsible for the High Speed Extension CAN Bus communication.
- Damaged wiring or connectors in the communication network.
- Software glitch or programming error in one of the modules.
- Physical damage to the CAN Bus itself, such as a short circuit or corrosion.
- Electrical interference from aftermarket accessories or modifications.
Symptoms of U007B 2014 Chevrolet Silverado
- Dashboard warning lights, such as the check engine light or communication error indicators.
- Erratic behavior of electronic components, such as malfunctioning gauges or infotainment system.
- Loss of communication with certain vehicle systems, leading to reduced functionality.
- Drivability issues, such as rough idling or poor acceleration.
- Inability to access certain features or functions controlled by the affected modules.
How to Fix U007B 2014 Chevrolet Silverado
- Begin by conducting a thorough diagnostic scan to retrieve the specific trouble codes and identify the affected modules.
- Inspect the wiring and connectors related to the High Speed Extension CAN Bus for any signs of damage or corrosion.
- Check for software updates or reprogramming procedures recommended by the manufacturer to address any known issues.
- Test the control modules involved in the communication network to determine if any are faulty and require replacement.
- Clear the trouble codes after completing the repair and perform a test drive to ensure that the issue has been resolved.
Cost to Fix U007B 2014 Chevrolet Silverado
The typical repair costs for addressing a U007B code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $100 to $500, with labor costs adding an additional $100 to $200. Keep in mind that these are rough estimates, and actual costs may differ based on the location of the repair shop, the expertise of the technician, and any additional services required. It's advisable to consult with a professional mechanic to get a more accurate cost estimate for your specific situation. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates can be higher at dealerships or in metropolitan areas.
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Frequently Asked Questions about U007B 2014 Chevrolet Silverado Code
What does the OBDII code U007B mean in a 2014 Chevrolet Silverado?
The U007B code indicates a problem with the high-speed CAN (Controller Area Network) bus communication, specifically the "Bus Off" state, which means the system has detected a failure in communication between control modules.
What are common symptoms of the U007B code in a 2014 Chevrolet Silverado?
Common symptoms include warning lights on the dashboard, such as the check engine light, erratic vehicle behavior, communication errors during diagnostics, or loss of functionality in certain systems like traction control or ABS.
What causes the U007B code to appear in a 2014 Chevrolet Silverado?
The most common causes include damaged or corroded wiring in the CAN bus system, faulty control modules, poor electrical connections, or a failing CAN bus transceiver.
Can a bad battery cause the U007B code in a 2014 Chevrolet Silverado?
Yes, a weak or failing battery can lead to voltage drops, which may disrupt communication within the CAN bus system and trigger the U007B code.
How can you diagnose the U007B code in a 2014 Chevrolet Silverado?
Diagnosis typically involves using a scan tool to check for related codes, inspecting the CAN bus wiring and connectors for damage or corrosion, and testing the voltage and ground connections of the affected control modules.
Can you drive a 2014 Chevrolet Silverado with the U007B code active?
While the vehicle may still drive, it is not recommended as the code indicates a communication issue that could lead to impaired functionality of critical systems like ABS or stability control.
What repairs are commonly needed to fix the U007B code in a 2014 Chevrolet Silverado?
Repairs may include repairing or replacing damaged CAN bus wiring, cleaning corroded connectors, replacing a faulty control module, or addressing any power or grounding issues.
Does the U007B code always mean a control module is faulty?
No, the U007B code often points to wiring or connection issues rather than a defective control module. Thorough diagnosis is essential before replacing any components.
Can updating the software fix the U007B code in a 2014 Chevrolet Silverado?
In some cases, a software update for the control modules may resolve communication issues if the problem is related to outdated programming.
How much does it cost to repair the U007B code on a 2014 Chevrolet Silverado?
Repair costs vary depending on the cause but typically range from $100 for minor wiring repairs to $500 or more if a control module replacement is needed.
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