When the MIL (malfunction indicator light) comes on, then goes off it indicates that the ECU/OBDII Computer has detected an anomaly in the EVAP Emissions Control System long enough to indicate the problem via the MIL dash light, then after monitoring the sensor that detected the off spec value(s) for a short period of time afterwards and not seeing the initial "off spec" reading anymore, the ECU Computer will turn the MIL (malfunction indicator light) off.I get this light occasionally on the 2022 Nissan Sentra, it comes on randomly then dissapears. Does anyone know what it means? Thank you!
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The process will continue until you determine the cause and repair it, or until the problem corrects itself permanently resulting in the MIL turning off and staying off.
As crazy as it sounds, these intermittent MIL dash light senarios, believe it or not are sometimes as simple to fix as tightening the gas cap or a gas cap replacement altogether.
Keep in mind that the MIL dash light only comes on when the computer detects an issue with the EVAP Canister Emissions Control System.
Also, if you ever discover that you have a "bad/leaking" VIAS Solenoid, Swirl Control Solenoid, Fuel Vent-Valve Solenoid, Fuel Shut-Off Solenoid, Fuel Tank/ EVAP Canister Pressure Solenoid, or EVAP Canister Vent Solenoid, you can easily bend the 4 metal tabs back, remove the metal casing, slide it off and replace the two round rubber "O" Rings / Rubber Grommets for pennies and save yourself a lot of $$ by not buying Solenoid Valves that otherwise work perfectly. Be Careful Not To Lose The Spring or the Valve Itself When Disassembling The Solenoid Valve(s) As These Parts Are Small And Hard To Track Once They Get A Taste Of Freedom 😅).