EGR Valve Position Sensor: Description and Operation

EGR Valve:

EVP Sensor:

The Exhaust Gas Recirculation Valve Position (EVP) sensor provides information to the Powertrain Control Module (PCM) reflecting the EGR valve position. The sensor has two purposes: It indicates the amount of exhaust gases flowing into the engine by monitoring the EGR valve movement, and it notifies the PCM of failure in the EGR valve.