P1AF2 GMC Code - Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost
Quick Answer
The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Drive Motor 2 Control Module Hybrid/EV Battery, Drive Motor 2 Control Module Hybrid/EV Battery harness is open or shorted, Drive Motor 2 Control Module Hybrid/EV Battery 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
- P1AF2 GMC indicates Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost.
- Common causes
- Common causes include Faulty Drive Motor 2 Control Module Hybrid/EV Battery, Drive Motor 2 Control Module Hybrid/EV Battery harness is open or shorted, Drive Motor 2 Control Module Hybrid/EV Battery 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 P1AF2 GMC Description
Motor control modules' loss of isolation is detected through the use of two high-impedance resistors and voltage measuring circuitry. The two resistors are connected in series between the high- voltage positive and high-voltage negative circuits. The centre connection of the two resistors is also connected to vehicle chassis. The motor control module then measures the voltage drop across one of the resistors. Without a loss of isolation, the motor control module should measure about half of the high voltage potential. This is referred to as mid-pack voltage. The Mid-pack voltage value is then doubled by the software and displayed on a scan tool as Motor 1 Isolation Voltage or Motor 2 Isolation Voltage. When a loss of isolation is present, the motor isolation voltage display will indicate voltage that is more or less than actual hybrid battery high voltage.
What are the Possible Causes of the DTC P1AF2 GMC?
- Faulty Drive Motor 2 Control Module Hybrid/EV Battery
- Drive Motor 2 Control Module Hybrid/EV Battery harness is open or shorted
- Drive Motor 2 Control Module Hybrid/EV Battery circuit poor electrical connection
How to Fix the DTC P1AF2 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 P1AF2 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.
Need more information about the P1AF2 GMC code?
Need more information on how to fix the P1AF2 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1AF2 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1AF2 GMC Code
1. What are the common symptoms of OBDII code P1AF2 in a GMC related to the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Common symptoms may include reduced hybrid/EV propulsion system performance, illuminated warning lights (such as the check engine light), and potential drivability issues.
2. What are the possible causes of the OBDII code P1AF2 indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost in a GMC?
- Potential causes may include wiring or connection issues, a faulty Drive Motor 2 Control Module, hybrid/EV battery problems, or issues with the isolation system.
3. How can I diagnose the OBDII code P1AF2 in a GMC related to the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, inspecting the wiring and connections, testing the Drive Motor 2 Control Module, and checking the hybrid/EV battery system.
4. Is it safe to continue driving my GMC if the OBDII code P1AF2 indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost is present?
- It is not recommended to continue driving the vehicle with this code present, as it can potentially lead to further damage to the hybrid/EV system. It's best to have the issue diagnosed and repaired promptly.
5. Can I reset the OBDII code P1AF2 related to Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost in my GMC by disconnecting the battery?
- While disconnecting the battery may clear the code temporarily, it is not a proper repair method. The underlying issue causing the code needs to be identified and fixed to prevent it from recurring.
6. Are there any specific repair tips for addressing the OBDII code P1AF2 in a GMC with Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Repair tips may include checking for loose or damaged wiring, ensuring proper connections, testing the Drive Motor 2 Control Module, and inspecting the hybrid/EV battery for any issues.
7. How serious is the OBDII code P1AF2 indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost in a GMC?
- This code can be considered serious as it pertains to the hybrid/EV system's voltage isolation, which is crucial for safe and efficient operation. It should be addressed promptly to prevent further complications.
8. Can a DIY enthusiast with automotive knowledge repair the OBDII code P1AF2 related to Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost in a GMC?
- While some basic troubleshooting steps can be performed by a knowledgeable individual, diagnosing and repairing issues related to hybrid/EV systems often require specialized tools and expertise best left to professionals.
9. Will fixing the OBDII code P1AF2 in a GMC with Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost be costly?
- The cost of repair can vary depending on the underlying cause of the code. It's advisable to have the vehicle properly diagnosed to determine the exact repair needed and associated costs.
10. Can the OBDII code P1AF2 indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost be a recurring issue in a GMC after it has been repaired?
- If the root cause of the code is effectively identified and repaired, the likelihood of it recurring should be minimal. Regular maintenance and monitoring of the hybrid/EV system can help prevent future occurrences.
Discuss the causes and fixes for P1AF2 GMC OBDII Code
Code P1AF2 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
