What does p0405-obd-II trouble code mean?
What does p0405-obd-II trouble code mean? Share it! What Does P0405 Code Mean? OBD-II Code P0405 is defined as a Exhaust Gas Recirculation Sensor A Circuit Low NOx gases, which are a leading cause of acid rain and in some people, respiratory problems, are formed when the engine combustion temperatures become too high (2500° F). How does the p0405 code work on the EGR sensor? The information from the EGR position sensor is sent to the PCM which then decides the flow of exhaust gasses depending on how much the EGR valve opens. If the PCM calculation does not match...