The Role of the Oxygen Sensor. ... This is unburnt oxygen that was initially injected into the fuel for proper combustion. Through a voltage signal, the O2 sensor communicates to the car's computer how much oxygen is in the exhaust, so that the computer can adjust the fuel/oxygen mixture delivered to the engine. If the oxygen sensor is going bad, the fuel-delivery and fuel-combustion systems will be thrown off. If a bad oxygen sensor disrupts the air to fuel ratio mixture, or

Diagnosing and repairing this code requires professional-grade diagnostic equipment, as well as above average knowledge of hybrid systems in general, and expert-level knowledge of the application being worked on in particular. Therefore, attempting to diagnose and repair this code along with any of its sub-codes is NOT recommended for DIY mechanics or non-dealership technicians who either do not have access to all relevant technical information on hybrid control systems, or w

They’ve seen an unusually high failure rate of the inverter/converter that controls the high voltage for the hybrid drive system. The inverter/converter is an important piece of electronics in your car – without it, you’re stuck. The boost converter contains a booster IPM (Intelligent Power Module), which includes an IGBT (Insulated Gate Bipolar Transistor) and a reactor. The HV control ECU actuates the IGBT, which controls the current in the reactor.The boost converter boos