U1806 Chevrolet Code - Battery Energy Control Module High Voltage Energy Management CAN Bus Off
Quick Answer
The high voltage energy management high-speed General Motor Local Area Network (GMLAN) serial data circuits are serial data buses used to communicate information between the Hybrid Powertrain Control Module 2, the Battery Energy Control Module, and the Battery Charger. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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
- U1806 Chevrolet indicates Battery Energy Control Module High Voltage Energy Management CAN Bus Off.
- Common causes
- Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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.
Code U1806 Chevrolet Description
The scan tool does not communicate with devices through the high voltage energy management high-speed GMLAN bus. The high voltage energy high-speed GMLAN serial data circuits connect directly to the auxiliary data connector and do not connect with the scan tool.
The Diagnostic Trouble Code (DTC) will set when the device setting the DTC has attempted to establish communications on the serial data circuits for more than 1.4 seconds without success.
What are the Possible Causes of the DTC U1806 Chevrolet?
- Faulty Battery Energy Control Module
- Battery Energy Control Module harness is open or shorted
- Battery Energy Control Module circuit poor electrical connection
- Faulty Hybrid Powertrain Control Module 2
How to Fix the DTC U1806 Chevrolet?
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 U1806 Chevrolet 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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Frequently Asked Questions about U1806 Chevrolet Code
1. What are the common symptoms of OBDII code U1806 in a Chevrolet related to the Battery Energy Control Module High Voltage Energy Management CAN Bus Off?
The common symptoms include a check engine light, reduced fuel efficiency, and potential issues with the hybrid or electric powertrain system.
2. What causes the U1806 code to trigger in a Chevrolet?
The U1806 code is typically triggered when there is a communication fault between the Battery Energy Control Module and the CAN bus network due to high voltage energy management issues.
3. How can I diagnose the U1806 code in my Chevrolet?
Diagnosing the U1806 code involves using a professional OBDII scanner to read the fault codes, checking the battery energy control module connections, and inspecting the high voltage energy management system for any damage or loose connections.
4. Can I still drive my Chevrolet with the U1806 code present?
It is not recommended to drive your Chevrolet with the U1806 code present as it can lead to further damage to the high voltage energy management system and potentially compromise the safety and performance of the vehicle.
5. How can I repair the U1806 code in my Chevrolet?
Repairing the U1806 code may involve resetting the fault codes, repairing or replacing damaged wiring or connectors in the high voltage energy management system, and ensuring proper communication between the Battery Energy Control Module and the CAN bus network.
6. Is the U1806 code specific to certain Chevrolet models?
The U1806 code related to the Battery Energy Control Module High Voltage Energy Management CAN Bus Off can be found in various Chevrolet models equipped with hybrid or electric powertrain systems.
7. Can a DIY enthusiast fix the U1806 code issue in a Chevrolet?
While some basic diagnostic steps can be performed by a DIY enthusiast, repairing the U1806 code may require specialized knowledge, tools, and expertise related to hybrid or electric powertrain systems. It is recommended to seek professional help for proper diagnosis and repair.
8. Will resetting the U1806 code make it go away permanently?
Resetting the U1806 code may temporarily clear the fault, but if the underlying issue with the Battery Energy Control Module and high voltage energy management system is not addressed, the code is likely to reappear.
9. How much does it cost to repair the U1806 code in a Chevrolet?
The cost of repairing the U1806 code in a Chevrolet can vary depending on the extent of the damage, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent mechanic.
10. Can the U1806 code affect the overall performance of my Chevrolet?
Yes, the U1806 code can affect the overall performance of your Chevrolet, especially if it is related to the high voltage energy management system. It is important to address this issue promptly to avoid further complications.
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