P1A6F Cadillac 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 Cadillac 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 Cadillac 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 Cadillac?
- 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 Cadillac?
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 Cadillac 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 Cadillac Code
1. What are the common symptoms of OBDII code P1A6F in a Cadillac?
- Common symptoms include the drive motor not cranking at restart, reduced hybrid propulsion power, and potential issues with the hybrid/electric drive system.
2. What are some possible causes of the Drive Motor No Crank At Restart issue in a Cadillac?
- Potential causes may include a faulty drive motor control module, low voltage in the high voltage battery, issues with the hybrid battery cooling system, or a malfunctioning hybrid powertrain control module.
3. How can I diagnose the Drive Motor No Crank At Restart problem in my Cadillac?
- Diagnosing the issue may involve using a professional OBDII scanner to retrieve the specific fault code (P1A6F), checking the high voltage battery charge level, inspecting the drive motor control module, and testing the hybrid powertrain components for any faults.
4. Can I drive my Cadillac with the P1A6F code present?
- It is not recommended to drive the vehicle with the P1A6F code, as it may lead to further damage to the hybrid/electric drive system. It is best to have the issue diagnosed and repaired by a qualified technician.
5. How can I repair the Drive Motor No Crank At Restart issue in my Cadillac?
- Repairing the problem may involve replacing the faulty drive motor control module, addressing any issues with the high voltage battery, ensuring proper cooling system operation, and performing any necessary software updates or reprogramming.
6. Is the Drive Motor No Crank At Restart problem a common issue in Cadillacs?
- While it may not be a common issue, experiencing the P1A6F fault code indicating drive motor no crank at restart can occur in Cadillac hybrid/electric vehicles, requiring prompt attention to prevent further complications.
7. How much does it typically cost to repair the Drive Motor No Crank At Restart issue in a Cadillac?
- The cost of repairing the P1A6F code can vary depending on the exact cause of the problem, parts needed for replacement, and labor costs. It is advisable to consult with a professional technician for an accurate estimate.
8. Can I reset the OBDII code P1A6F in my Cadillac on my own?
- While you can clear the fault code using an OBDII scanner, it is important to address the underlying issue causing the P1A6F code before resetting it. Resetting the code without fixing the problem may lead to recurring issues.
9. Will the Drive Motor No Crank At Restart problem affect the overall drivability of my Cadillac?
- Yes, the issue can impact the drivability of the vehicle, especially in terms of hybrid propulsion power and drive motor functionality. It is best to address the problem promptly to ensure safe and optimal operation.
10. Can a DIY enthusiast repair the Drive Motor No Crank At Restart problem in a Cadillac?
- Due to the complexity of the hybrid/electric drive system and the specialized components involved, it is recommended to seek professional help from a qualified technician with experience in handling Cadillac's hybrid vehicles.
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