P1AF2 Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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.
Code Tech Notes
The following DTCs may be set:
- P1AEE - Drive Motor 1 Control Module Hybrid/EV Battery System Voltage High Voltage
- P1AEF- Drive Motor 2 Control Module Hybrid/EV Battery System Voltage High Voltage
- P1AF0 - Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost
- P1AF2 - Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost
- P1E22 - Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage System Isolation Lost
If only two or three of these DTCs are set, follow the appropriate Service Information diagnostic procedures. The cause may not be any internal components of the transmission.
If all five DTCs are set, there is an internal fault with the transmission and the transmission requires replacement. Do not attempt any internal repairs.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1AF2 Chevrolet 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 P1AF2 Chevrolet Code
1. What are the common symptoms of OBDII code P1AF2 in a Chevrolet related to the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Common symptoms may include a decrease in hybrid/EV performance, reduced fuel efficiency, and potential drivability issues.
2. What could cause the OBDII code P1AF2 in a Chevrolet indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- The code may be triggered by a faulty drive motor control module, issues with the hybrid/EV battery system isolation, wiring problems, or software glitches.
3. How can I diagnose the OBDII code P1AF2 related to Drive Motor 2 Control Module in a Chevrolet?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the drive motor control module, inspecting the hybrid/EV battery system, and testing the relevant wiring for faults.
4. Is it safe to continue driving with the OBDII code P1AF2 present in a Chevrolet?
- It is advisable to avoid driving the vehicle if you experience significant drivability issues or a noticeable decrease in performance to prevent further damage. Seek professional help to diagnose and repair the issue.
5. Can I reset the OBDII code P1AF2 in a Chevrolet related to Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost by simply clearing the code?
- Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.
6. Are there any DIY repair tips for addressing the OBDII code P1AF2 in a Chevrolet associated with the Drive Motor 2 Control Module?
- DIY repairs for this code may be challenging due to the complexity of hybrid/EV systems. It's recommended to consult a qualified technician or dealership for proper diagnosis and repair.
7. What is the typical cost to repair the OBDII code P1AF2 in a Chevrolet related to Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Repair costs can vary depending on the exact cause of the issue. Expenses may include parts replacement, labor costs, and diagnostic fees. It's best to obtain quotes from reputable repair shops.
8. How long does it take to fix the OBDII code P1AF2 indicating Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost in a Chevrolet?
- The repair time can vary based on the diagnosis, parts availability, and the complexity of the repair needed. Some fixes may be completed in a few hours, while others might take longer.
9. Can a faulty hybrid/EV battery be the cause of the OBDII code P1AF2 in a Chevrolet related to Drive Motor 2 Control Module?
- Yes, a malfunctioning hybrid/EV battery or issues with the battery system isolation can contribute to triggering the P1AF2 code. It's crucial to inspect the battery system as part of the diagnosis.
10. Is the OBDII code P1AF2 in a Chevrolet related to Drive Motor 2 Control Module a common issue in hybrid or electric vehicles?
- While it may not be the most common code, issues related to drive motor control modules and hybrid/EV battery systems can occur in hybrid and electric vehicles, necessitating timely diagnosis and repair.
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