P1AF0 on 2021-2025 Jeep Wrangler (4xe, Sahara 4xe, Rubicon 4xe) — Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost
1 vehicles · 1 makes
Most Reported On
P1AF0 is an OBD-II diagnostic trouble code meaning “Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost.” Manufacturer-specific (General Motors hybrid and EV platforms, including Chevrolet Volt and related GMC/Saturn hybrids). The drive motor 1 control module monitors electrical isolation between the high-voltage battery circuits and the vehicle chassis, and this code sets when that measurement indicates high voltage is leaking to chassis ground. This is a high-voltage safety fault: the vehicle typically limits or disables propulsion and charging. It may set alongside other high-voltage codes such as P1AF2 (drive motor 2) and P0A1B. This code is most commonly reported on 2021-2025 Jeep Wrangler (4xe, Sahara 4xe, Rubicon 4xe).
Common Causes
Diagnostic Tools
P1AF0 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does P1AF0 mean?
P1AF0 stands for "Drive Motor 1 Control Module Hybrid/EV Battery Voltage System Isolation Lost." Manufacturer-specific (General Motors hybrid and EV platforms, including Chevrolet Volt and related GMC/Saturn hybrids). The drive motor 1 control module monitors electrical isolation between the high-voltage battery circuits and the vehicle chassis, and this code sets when that measurement indicates high voltage is leaking to chassis ground. This is a high-voltage safety fault: the vehicle typically limits or disables propulsion and charging. It may set alongside other high-voltage codes such as P1AF2 (drive motor 2) and P0A1B.
What are the most common causes of P1AF0?
The most common causes of P1AF0 are: Coolant or moisture intrusion into the power inverter module or drive unit, Damaged high-voltage cable insulation or a chafed HV harness, Open or shorted drive motor control module HV harness, Internal isolation failure in a drive motor stator winding, Failed high-voltage battery pack module or contactor assembly with internal leakage, Faulty power inverter module / drive motor control module, or poor connection at its HV circuit. The specific cause varies by vehicle.
How much does it cost to fix P1AF0?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P1AF0?
Au7o has documented P1AF0 across 1 vehicle models from 1 manufacturers: Jeep.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.