Hella Exhaust Pressure Sensor 6PP009409021

An exhaust pressure sensor in a car is a device that measures the pressure of the exhaust gases exiting the engine. It is typically located in the exhaust system, near the catalytic converter or the diesel particulate filter. The sensor monitors the pressure levels in the exhaust system and sends this information to the car's engine control unit (ECU).

The main function of the exhaust pressure sensor is to ensure optimal engine performance and fuel efficiency. By measuring the exhaust pressure, the sensor helps the ECU determine if the engine is operating within the specified parameters. If the pressure is too high or too low, it can indicate a potential issue with the engine, such as a clogged exhaust system or a malfunctioning component. The ECU can then adjust the air-fuel ratio or make other necessary adjustments to maintain the engine's performance and reduce emissions.