P1AF2 Cadillac 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 Cadillac 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 Cadillac 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 Cadillac?
- 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 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 P1AF2 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.
Need more information about the P1AF2 Cadillac code?
Need more information on how to fix the P1AF2 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1AF2 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1AF2 Cadillac Code
1. What are common symptoms of OBDII code P1AF2 in a Cadillac related to the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost?
- Common symptoms may include reduced hybrid system performance, check engine light illumination, and potential drivability issues.
2. What could cause the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost code to appear in a Cadillac?
- Possible causes may include a faulty drive motor control module, issues with the hybrid/EV battery voltage system, wiring harness problems, or software glitches.
3. How serious is the P1AF2 fault code related to the Hybrid/EV battery system in a Cadillac?
- This code indicates a problem with the isolation of the battery voltage system, and it should be addressed promptly to prevent potential damage to the hybrid or electric vehicle components.
4. Can I continue driving my Cadillac with the P1AF2 code present?
- It is not recommended to continue driving with this fault code active, as it can lead to further damage to the hybrid system components and may result in decreased performance.
5. How can I diagnose and repair the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost issue in my Cadillac?
- Diagnosis typically involves inspecting the drive motor control module, checking the wiring connections, testing the hybrid battery voltage system, and using specialized diagnostic tools to pinpoint the exact cause.
6. Are there any common DIY fixes for the P1AF2 fault code in a Cadillac?
- DIY fixes may include checking and tightening loose wiring connections, resetting the fault code using an OBDII scanner, and ensuring the hybrid/EV battery system is properly charged.
7. Will resetting the fault code make the issue go away permanently?
- Resetting the fault code may temporarily clear the warning light, but if the underlying issue causing the P1AF2 code is not addressed, it is likely to reappear.
8. How much does it typically cost to repair the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost problem in a Cadillac?
- Repair costs can vary depending on the exact cause of the issue, but it may involve replacing the drive motor control module, repairing wiring harnesses, or addressing battery system faults, which can range from a few hundred to over a thousand dollars.
9. Can a regular mechanic fix the P1AF2 fault code in a Cadillac, or is specialized expertise required?
- While a regular mechanic may be able to diagnose and repair some aspects of this issue, specialized knowledge of hybrid and electric vehicle systems is often necessary to effectively troubleshoot and resolve the problem.
10. Is it advisable to seek professional help for the Drive Motor 2 Control Module Hybrid/EV Battery Voltage System Isolation Lost fault code in a Cadillac?
- Yes, it is recommended to consult a qualified technician or dealership familiar with hybrid and electric vehicle systems to accurately diagnose and repair the P1AF2 fault code to ensure the safety and performance of the vehicle.
Discuss the causes and fixes for P1AF2 Cadillac OBDII Code
Code P1AF2 Cadillac 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.
