Understanding the Red Triangle of Death in Your Toyota Prius

The red triangle of death is a warning light on Toyota Prius hybrid vehicles that indicates a problem with the gasoline-electric powertrain. The light is similar to a check engine light on a standard combustion vehicle. The most common reason is a battery issue. Other causes: Low oil level, Failing inverter pump, Gas cap issue. The codes that come up are P0A80 and P3000.