P0A0B OBD-II: High Voltage System Interlock Circuit Performance
P0A0B Severity
Should you fix P0A0B yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0A0B?
The High Voltage System is equipped with multiple safety devices to reduce electrical hazards while the vehicle is being worked on or if the vehicle is involved in a crash. If the engine control module (PCM) detects that any of the safety devices are disconnected or not connected, the hybrid system will shut down. When the PCM detects a hybrid system shut down, it will set code P0A0B.
OBD II Fault Code
- OBD II P0A0B
OBD-II Code High voltage system may not operate is defined as a High Voltage System Interlock Circuit Performance
The High Voltage System is equipped with multiple safety devices to reduce electrical hazards while the vehicle is being worked on or if the vehicle is involved in a crash. If the engine control module (PCM) detects that any of the safety devices are disconnected or not connected, the hybrid system will shut down. When the PCM detects a hybrid system shut down, it will set code P0A0B.
High voltage system may not operate Symptoms
- High voltage system may not operate
- Vehicle will not operate
Common Problems That Trigger the P0A0B Code
- High voltage safety device failure
- Inverter/converter assembly failure
- Power management control module failure
- Service disconnect plug is not properly connected
- Wiring issue
Ask our experts about P0A0B.
RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.
Call us at 877-913-1554
Available 9am – 6pm ET Monday through Friday
