P1AF0 Chevrolet Code - Drive Motor 1 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 1 Control Module Hybrid/EV Battery, Drive Motor 1 Control Module Hybrid/EV Battery harness is open or shorted, Drive Motor 1 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
- P1AF0 Chevrolet indicates Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost.
- Common causes
- Common causes include Faulty Drive Motor 1 Control Module Hybrid/EV Battery, Drive Motor 1 Control Module Hybrid/EV Battery harness is open or shorted, Drive Motor 1 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 P1AF0 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 P1AF0 Chevrolet?
- Faulty Drive Motor 1 Control Module Hybrid/EV Battery
- Drive Motor 1 Control Module Hybrid/EV Battery harness is open or shorted
- Drive Motor 1 Control Module Hybrid/EV Battery circuit poor electrical connection
How to Fix the DTC P1AF0 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 P1AF0 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.
Need more information about the P1AF0 Chevrolet code?
Need more information on how to fix the P1AF0 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1AF0 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1AF0 Chevrolet Code
1. What are common symptoms of OBDII code P1AF0 in a Chevrolet related to Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Common symptoms may include reduced electric driving range, decreased hybrid system performance, and potential illumination of the Check Engine Light.
2. What can cause the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue in a Chevrolet?
- Possible causes include a faulty drive motor control module, issues with the hybrid/EV battery voltage system isolation, wiring problems, or a malfunctioning battery pack.
3. How can I diagnose the OBDII code P1AF0 in my Chevrolet related to Hybrid/EV battery system isolation loss?
- Proper diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code, followed by a thorough inspection of the drive motor control module, battery system, and associated wiring.
4. Can I still drive my Chevrolet with the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue?
- It is not recommended to continue driving the vehicle with this issue, as it may lead to further damage to the hybrid system components and potentially affect the vehicle's performance.
5. What are some repair tips for resolving the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost problem in a Chevrolet?
- Repair tips may include checking and repairing any damaged wiring, replacing a faulty drive motor control module, ensuring proper battery system isolation, and clearing the fault code using a diagnostic tool.
6. Is it safe to reset the OBDII code P1AF0 related to the Drive Motor 1 Control Module issue in a Chevrolet without addressing the underlying problem?
- It is not recommended to simply reset the code without investigating and resolving the root cause, as the issue may persist and potentially lead to more severe problems in the hybrid system.
7. How much does it typically cost to repair the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue in a Chevrolet?
- The cost of repairs can vary depending on the specific cause of the problem, but it may involve expenses for parts replacement, labor, and diagnostic services.
8. Can a DIY enthusiast with automotive knowledge fix the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue in a Chevrolet?
- While some basic troubleshooting and repairs may be possible for experienced DIY enthusiasts, diagnosing and resolving complex hybrid system issues often require specialized tools and expertise best handled by professional technicians.
9. What are the long-term consequences of ignoring the OBDII code P1AF0 related to the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost in a Chevrolet?
- Ignoring this issue can potentially lead to further damage to the hybrid system components, reduced fuel efficiency, and possible risk of safety hazards, making timely repairs essential.
10. How can regular maintenance help prevent the recurrence of the Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue in a Chevrolet?
- Regular maintenance, including scheduled inspections of the hybrid system, battery components, and electrical connections, can help identify potential issues early on and prevent the reoccurrence of the Drive Motor 1 Control Module problem.
Discuss the causes and fixes for P1AF0 Chevrolet OBDII Code
Code P1AF0 Chevrolet 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.
