P1A6F Buick Code - Drive Motor No Crank At Restart
Quick Answer
The Generator Control Module also called the Starter/Generator Control Module is comprised of the following three control modules: the Hybrid/EV Powertrain Control Module 1, 14 V Power Module, and the Drive Motor Control Module. Common causes include Check/Replace Drive Belt, Faulty Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted. 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
- P1A6F Buick indicates Drive Motor No Crank At Restart.
- Common causes
- Common causes include Check/Replace Drive Belt, Faulty Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted.
- 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 P1A6F Buick Description
The eAssist hybrid system has the ability to crank and start the engine using two different methods. The first method is a conventional 12-volt system. On every initial start up the conventional 12-volt starter and 12-volt battery are used to crank and start the engine.
The second starting method uses the 86-volt hybrid/EV battery pack and the starter/generator also called the drive motor. The drive motor is a 3 phase AC induction machine. This device not only serves as an 86-volt AC generator but is also used to provide engine power assist and to start the engine when in auto-stop mode. If the system is in the auto-stop mode and fails to restart with the drive motor, the 12-volt conventional starter will automatically be engaged to start the engine.
The Diagnostic Trouble Code (DTC) will be set when the Hybrid/EV Powertrain Control Module 1 detects that an autostart failed to take place successfully.
What are the Possible Causes of the DTC P1A6F Buick?
- Check/Replace Drive Belt
- 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 P1A6F 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 P1A6F 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 P1A6F Buick Code
1. What are common symptoms of OBDII code P1A6F in a Buick related to the drive motor no crank at restart?
- Common symptoms include the drive motor not engaging when attempting to restart the vehicle, and a noticeable lack of power or acceleration.
2. What are some possible causes of OBDII code P1A6F in a Buick indicating a drive motor no crank at restart issue?
- Possible causes may include a faulty drive motor, issues with the drive motor control module, wiring problems, or a malfunction in the hybrid powertrain system.
3. How can I diagnose the OBDII code P1A6F in my Buick if I suspect a drive motor no crank at restart problem?
- Diagnosing this code may involve using a diagnostic scanner to retrieve the specific fault codes, conducting a visual inspection of the drive motor components, and testing the drive motor control module.
4. Is it safe to continue driving my Buick with the OBDII code P1A6F indicating a drive motor no crank at restart issue?
- It is not recommended to continue driving the vehicle with this code, as it may lead to further damage to the drive motor system and potentially compromise the safety of the vehicle.
5. Can I repair the OBDII code P1A6F related to the drive motor no crank at restart issue in my Buick myself?
- Repairing this code may require specialized tools and knowledge of hybrid vehicle systems, so it is advisable to consult a qualified mechanic or dealership for proper diagnosis and repair.
6. What are some preventive maintenance tips to avoid encountering the OBDII code P1A6F in a Buick related to the drive motor no crank at restart problem?
- Regularly scheduled maintenance, such as checking and replacing worn drive motor components, ensuring proper electrical connections, and following the manufacturer's service recommendations can help prevent this issue.
7. How much does it typically cost to repair the OBDII code P1A6F in a Buick indicating a drive motor no crank at restart issue?
- The cost of repair can vary depending on the specific cause of the problem, but it may involve replacing components such as the drive motor, control module, or addressing wiring issues, which can range from a few hundred to a few thousand dollars.
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