U2612 Buick Code - Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. 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
- U2612 Buick indicates Battery Charger Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2.
- 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 U2612 Buick Description
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on a high-speed General Motors Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 2. If this message is not received within 400 ms, the Battery Energy Control Module increases its fail count. When this fail count is over X Cal Value (7) during Y Cal Value (10 samples), the diagnostic status of this code is set to Failed and transmitted over high voltage energy high-speed GMLAN bus to the Hybrid/EV Powertrain Control Module 2.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received within 400 ms.
What are the Possible Causes of the DTC U2612 Buick?
- Faulty Battery Charger Control Module
- Battery Charger Control Module harness is open or shorted
- Battery Charger Control Module circuit poor electrical connection
- Faulty Hybrid/EV Powertrain Control Module 2
How to Fix the DTC U2612 Buick?
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 U2612 Buick 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 U2612 Buick Code
1. What are the common symptoms of OBDII code U2612 in a Buick?
- Common symptoms include the Check Engine light illuminating, battery-related warnings, and issues with the hybrid/EV powertrain system.
2. What does the OBDII code U2612 in a Buick indicate?
- This code indicates that there is a communication error between the Battery Charger Control Module and the Hybrid/EV Powertrain Control Module 2.
3. What are the possible causes of code U2612 in a Buick?
- Possible causes include faulty wiring or connectors, a malfunctioning Battery Charger Control Module, issues with the Hybrid/EV Powertrain Control Module 2, or a weak battery.
4. How can I diagnose the OBDII code U2612 in my Buick?
- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault codes and then inspecting the wiring, connectors, modules, and battery for any issues.
5. Can I still drive my Buick with code U2612 present?
- It is not recommended to drive the vehicle with this code present, as it may lead to further damage to the hybrid/EV powertrain system. It's best to address the issue promptly.
6. How can I repair OBDII code U2612 in my Buick?
- Repairing this code may involve checking and repairing any wiring or connector issues, replacing the Battery Charger Control Module or Hybrid/EV Powertrain Control Module 2 if necessary, and ensuring the battery is in good condition.
7. Is it necessary to visit a dealership for code U2612 repair in a Buick?
- While visiting a dealership with specialized equipment and trained technicians is recommended, independent auto repair shops with experience in hybrid vehicles may also be able to diagnose and repair this code.
8. Can a weak battery cause code U2612 in a Buick?
- Yes, a weak or failing battery can cause communication issues between modules and trigger code U2612. It's essential to ensure the battery is in good condition as part of the diagnostic process.
9. How long does it typically take to repair OBDII code U2612 in a Buick?
- The repair time can vary depending on the exact cause of the code and the availability of parts. In some cases, it may be a quick fix, while in others, it could take longer to diagnose and repair the issue.
10. Will resetting the OBDII code U2612 in my Buick make it go away permanently?
- Simply resetting the code without addressing the underlying issue will not make it go away permanently. It's crucial to diagnose and repair the root cause to prevent the code from reoccurring.
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