U2611 Buick Code - Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump 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
- U2611 Buick indicates Auxiliary Transmission Fluid Pump Control Module Lost Communication With Hybrid/EV Powertrain Control Module.
- Common causes
- Common causes include Faulty Auxiliary Transmission Fluid Pump Control Module, Auxiliary Transmission Fluid Pump Control Module harness is open or shorted, Auxiliary Transmission Fluid Pump 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 U2611 Buick Description
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 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. 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.
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 U2611 Buick?
- Faulty Auxiliary Transmission Fluid Pump Control Module
- Auxiliary Transmission Fluid Pump Control Module harness is open or shorted
- Auxiliary Transmission Fluid Pump Control Module circuit poor electrical connection
- Faulty Hybrid/EV Powertrain Control Module
How to Fix the DTC U2611 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 U2611 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 U2611 Buick Code
1. What are the common symptoms of OBDII code U2611 in a Buick related to the Auxiliary Transmission Fluid Pump Control Module?
The common symptoms include transmission shifting issues, poor vehicle performance, and illuminated warning lights on the dashboard.
2. What are the possible causes of the U2611 code in a Buick?
Possible causes include a faulty hybrid/EV powertrain control module, damaged wiring or connectors, software issues, or a malfunctioning auxiliary transmission fluid pump control module.
3. How can I diagnose the U2611 code in my Buick?
Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, inspecting the wiring and connectors for damage, and testing the communication between the control modules.
4. Can I continue driving my Buick with the U2611 code present?
It is not recommended to drive the vehicle with the U2611 code active, as it can lead to further damage to the transmission system or other related components.
5. How can I repair the U2611 code in my Buick?
Repair options may include repairing or replacing damaged wiring, addressing any software issues, replacing the faulty control module, or seeking assistance from a qualified mechanic.
6. Is the U2611 code in a Buick a serious issue?
Yes, the U2611 code should be addressed promptly to prevent potential damage to the transmission system and ensure the vehicle operates safely.
7. Can a DIY enthusiast fix the U2611 code in a Buick?
While some basic troubleshooting steps can be taken by a DIY enthusiast, resolving the U2611 code may require specialized tools and expertise, so it is advisable to seek professional help if needed.
8. Will resetting the trouble codes make the U2611 code disappear?
Resetting the trouble codes may temporarily clear the U2611 code, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.
9. Is the U2611 code specific to Buick vehicles only?
The U2611 code related to the auxiliary transmission fluid pump control module lost communication with the hybrid/EV powertrain control module is specific to certain Buick models and other vehicles with similar transmission systems.
10. How much does it typically cost to repair the U2611 code in a Buick?
The cost of repairing the U2611 code can vary depending on the specific cause of the issue, the required parts, and labor costs. It is recommended to obtain quotes from different mechanics or dealerships for an accurate estimate.
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