U2612 GMC 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 GMC 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 GMC 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 GMC?
- 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 GMC?
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 GMC 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 GMC Code
1. What are the common symptoms of OBDII code U2612 in a GMC vehicle?
- Common symptoms include the battery not charging properly, loss of power, warning lights on the dashboard, and issues with the hybrid or electric powertrain.
2. What can cause the OBDII code U2612 to trigger in a GMC vehicle?
- The code U2612 can be triggered by a communication breakdown between the Battery Charger Control Module and the Hybrid/EV Powertrain Control Module 2.
3. How serious is the U2612 code in a GMC vehicle?
- The U2612 code is considered serious as it can lead to improper charging of the battery and potential performance issues with the hybrid or electric powertrain.
4. What are some possible repair tips for resolving the U2612 code in a GMC vehicle?
- Some repair tips include checking and repairing any wiring or connection issues between the control modules, resetting the system, and updating software as needed.
5. Can the U2612 code be cleared/reset by disconnecting the battery in a GMC vehicle?
- Disconnecting the battery may temporarily clear the code, but it is important to address the underlying communication issue between the control modules to prevent the code from reoccurring.
6. Is it safe to continue driving with the U2612 code present in a GMC vehicle?
- It is not recommended to continue driving with the U2612 code present, as it can lead to further damage to the hybrid or electric powertrain components.
7. Will the U2612 code affect the overall drivability of a GMC vehicle?
- Yes, the U2612 code can affect the drivability by causing issues with battery charging and powertrain performance in a GMC vehicle.
8. How can a professional mechanic diagnose the U2612 code in a GMC vehicle?
- A professional mechanic can diagnose the U2612 code using a diagnostic scanner to retrieve the specific fault codes and perform further testing on the control modules and related components.
9. Are there any recalls or technical service bulletins related to the U2612 code for GMC vehicles?
- It is recommended to check with a GMC dealership or the manufacturer's website for any recalls or technical service bulletins related to the U2612 code in specific vehicle models.
10. Can the U2612 code be a recurring issue in GMC vehicles even after it has been repaired?
- If the underlying cause of the U2612 code is not properly addressed, it can become a recurring issue in GMC vehicles, leading to continued communication problems between the control modules.
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