P0B09 GMC 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 GMC 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 GMC 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 GMC?
- 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 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 P0B09 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 P0B09 GMC Code
1. What are common symptoms of OBDII code P0B09 in a GMC vehicle?
Faulty auxiliary transmission fluid pump operation, illuminated Check Engine Light, transmission issues such as slipping or erratic shifting.
2. What can cause the P0B09 code to trigger in a GMC vehicle?
Possible causes include a malfunctioning auxiliary transmission fluid pump, wiring issues, a faulty supply voltage relay, or a problem with the control circuit.
3. How can I diagnose the P0B09 code in my GMC vehicle?
Diagnosis typically involves checking the auxiliary transmission fluid pump, inspecting the wiring for any damage or loose connections, testing the supply voltage relay, and verifying the control circuit's operation.
4. Are there any DIY repair tips for resolving the P0B09 code in a GMC vehicle?
DIY repair options may include checking and replacing blown fuses, repairing damaged wiring, replacing the auxiliary transmission fluid pump if needed, and ensuring all connections are secure.
5. Can driving with the P0B09 code present cause further damage to the vehicle?
Continuing to drive with the P0B09 code can potentially lead to transmission issues worsening over time, potentially causing further damage and increased repair costs.
6. Is it safe to ignore the P0B09 code in a GMC vehicle?
It is not recommended to ignore the P0B09 code, as it indicates a problem with the auxiliary transmission fluid pump system that can affect the vehicle's performance and drivability.
7. How much does it typically cost to repair the P0B09 code in a GMC vehicle?
Repair costs for the P0B09 code can vary depending on the underlying issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
8. Can a mechanic reset the OBDII code P0B09 without addressing the root cause?
While a mechanic can clear the code temporarily, it will likely reappear if the underlying issue with the auxiliary transmission fluid pump supply voltage relay control circuit is not addressed.
9. Are there any recalls or technical service bulletins related to the P0B09 code in GMC vehicles?
It's advisable to check with a GMC dealership or online resources for any recalls or technical service bulletins related to the P0B09 code to see if there are known issues or solutions.
10. How long does it typically take to repair the P0B09 code in a GMC vehicle?
The repair time for the P0B09 code can vary based on the specific issue and the mechanic's expertise, but it may take a few hours to a full day to diagnose and fix the problem.
Discuss the causes and fixes for P0B09 GMC OBDII Code
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