P0AFF - OBD II Trouble Code

Our automotive experts have put together the following information about the P0AFF diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0AFF code.

OBD II Fault Code

• OBD II P0AFF

OBD-II Code High voltage system may not operate is defined as a System Voltage Too Low for Voltage Step Down Conversion

Code PAFF is stored when the voltage in the hybrid system is too low. Additional codes may be stored in other modules and should be diagnosed and repaired first.

High voltage system may not operate Symptoms

• High voltage system may not operate

Common Problems That Trigger the P0AFF Code

• High voltage battery assembly failure
• Powertrain Control Module (PCM) failure
• Wiring issue

Common Repairs Needed for the P0AFF Code

• Battery Replacement