U1807 Chevrolet Code - Battery Charger 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 Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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
- U1807 Chevrolet indicates Battery Charger Control Module High Voltage Energy Management CAN Bus Off.
- Common causes
- Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger 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 U1807 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 U1807 Chevrolet?
- Faulty Battery Charger Control Module
- Battery Charger Control Module harness is open or shorted
- Battery Charger Control Module circuit poor electrical connection
How to Fix the DTC U1807 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 U1807 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 U1807 Chevrolet Code
1. What are common symptoms of OBDII code U1807 in a Chevrolet related to the Battery Charger Control Module High Voltage Energy Management CAN Bus Off?
- Common symptoms may include issues with the battery charging system, reduced battery performance, and potential warning lights on the dashboard.
2. What are some possible causes of the U1807 code in a Chevrolet?
- Possible causes may include a faulty battery charger control module, issues with the high voltage energy management system, or a malfunction in the CAN bus communication network.
3. How can I diagnose the U1807 code in my Chevrolet?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of related components, and checking for any loose connections or damaged wiring.
4. Is it safe to continue driving my Chevrolet with the U1807 code present?
- It is not recommended to continue driving the vehicle with this code present, as it may lead to further damage to the battery system or other electrical components.
5. Can I repair the U1807 code in my Chevrolet myself?
- While some DIY enthusiasts may attempt to diagnose and repair this code, it is advisable to seek professional help, especially when dealing with high voltage systems and complex electrical issues.
6. Are there any specific repair tips for fixing the U1807 code in a Chevrolet?
- Some repair tips may include checking and replacing the battery charger control module, inspecting and repairing any damaged wiring, and ensuring proper communication within the CAN bus network.
7. How much does it typically cost to repair the U1807 code in a Chevrolet?
- Repair costs can vary depending on the specific issue causing the code, the extent of the damage, and whether any parts need replacement. It is recommended to obtain a professional diagnosis for an accurate cost estimate.
8. Can a U1807 code be triggered by a simple battery issue in a Chevrolet?
- While a weak or faulty battery can potentially cause electrical issues, the U1807 code specifically relates to the Battery Charger Control Module High Voltage Energy Management CAN Bus Off, requiring a more detailed diagnosis.
9. Will resetting the OBDII system clear the U1807 code in a Chevrolet?
- Resetting the system may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
10. Is the U1807 code common in Chevrolet vehicles with hybrid or electric powertrains?
- Yes, the U1807 code is more commonly found in Chevrolet vehicles equipped with hybrid or electric powertrains due to the complex nature of their battery management systems and communication networks.
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