P1409 FORD, JAGUAR, LINCOLN, MAZDA, MERCURY: EGR VACUUM REGULATOR SOLENOID CIRCUIT MALFUNCTION
POST UPDATED IN January, 2023
P1409 FORD, JAGUAR, LINCOLN, MAZDA, MERCURY: EGR VACUUM REGULATOR SOLENOID CIRCUIT MALFUNCTION
The Exhaust Gas Recirculation (EGR) is a system is that limits nitrogen oxide emissions. To achieve this goal, the nitrogen oxide is sent to the upper engine inlet, where it is mixed with the resulting air-fuel charge. This process burns cooler and significantly reduces temperature, which reduces the amount of nitrogen oxide emissions.
The EGR vacuum regulator solenoid controls or regulates how much vacuum is provided to the EGR valve, allowing it to open or close as required by the engine conditions. This system continuously makes several self-checks to verify that each component is not working wrongly.
The P1409 OBDII fault code is a code that Ford, Jaguar, Lincoln, Mazda, and Mercury vehicle manufacturers use to indicate that after the electrical function test of the EGR vacuum regulator solenoid (EGRVR), voltage is out of the allowed range in their circuits, which is considered a malfunction of the circuit. To complete the test, the Exhaust Gas Recirculation system must be enabled.
Reasons to set the P1409 OBD2 diagnostic code:
The steps to follow to correct the DTC P1409 OBDII code are: