P0B09 Buick Code - Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit
Quick Answer
The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator 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
- P0B09 Buick indicates Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit.
- Common causes
- Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator 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 P0B09 Buick Description
The transmission fluid pump - auxiliary is used to maintain transmission fluid line pressure to the transmission during Autostop mode. The transmission fluid pump - auxiliary is externally mounted to the transmission case assembly. The hybrid powertrain control module controls the auxiliary pump by providing the ground path to the transmission pump relay - auxiliary coil control circuit.
What are the Possible Causes of the DTC P0B09 Buick?
- Faulty Starter Generator Control Module
- Starter Generator Control Module harness is open or shorted
- Starter Generator Control Module circuit poor electrical connection
How to Fix the DTC P0B09 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 P0B09 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 P0B09 Buick Code
1. What are common symptoms of OBDII code P0B09 in a Buick related to the Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit?
The common symptoms include poor shifting performance, transmission slipping, and the vehicle going into limp mode.
2. What could cause the OBDII code P0B09 in a Buick?
Possible causes of this code include a faulty auxiliary transmission fluid pump, issues with the supply voltage relay, damaged wiring or connectors, or a problem with the transmission control module.
3. How can I diagnose the cause of OBDII code P0B09 in my Buick?
Diagnosing this code typically involves using a scan tool to read the trouble codes and data from the transmission control module, conducting a visual inspection of the wiring and connectors, and performing specific tests on the auxiliary transmission fluid pump and relay.
4. Can I continue driving my Buick with OBDII code P0B09 present?
It is not recommended to continue driving the vehicle with this code as it can lead to further damage to the transmission system. It is best to address the issue promptly.
5. What are some repair tips for fixing OBDII code P0B09 in a Buick?
Repair tips may include checking and replacing faulty wiring or connectors, testing and replacing the auxiliary transmission fluid pump, verifying the operation of the supply voltage relay, and ensuring the transmission control module is functioning correctly.
6. Is it possible to reset OBDII code P0B09 in a Buick without fixing the underlying issue?
While you can clear the trouble code with a scan tool, it is important to address the root cause of the problem to prevent the code from reoccurring.
7. How much does it typically cost to repair OBDII code P0B09 in a Buick?
The cost of repairs for this code can vary depending on the specific cause of the issue, but it may involve expenses for parts and labor associated with diagnosing and fixing the problem.
8. Are there any recalls or technical service bulletins related to OBDII code P0B09 in Buick vehicles?
It's recommended to check with Buick dealerships or online resources for any recalls or technical service bulletins related to this specific OBDII code to see if there are any known issues or solutions provided by the manufacturer.
9. Can a DIY enthusiast fix OBDII code P0B09 in a Buick?
Depending on the individual's experience and access to tools, some DIY enthusiasts may be able to diagnose and repair this code themselves. However, due to the complexity of transmission systems, it's often best to consult a professional mechanic for proper diagnosis and repair.
10. How urgent is it to address OBDII code P0B09 in a Buick?
It is recommended to address this code as soon as possible to prevent further damage to the transmission system and avoid potential safety hazards while driving.
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