Remove air hose from the connection at the valve, start the car, check to see if you have a nice, strong, air flow from the pump. Start car and see if the SA pump comes on. Sitting over night had no effect on the EVAP monitor status. The SAS monitor should reset after the second or third cold start. This same thing happened on my 2012 Range Rover. After the third highway trip, I turned off the car and came back to the car only a few minutes later and my scan tool said EVAP was ready. In the eight days I was trying to get the monitors to set, I took about three trips of 5+ miles on the highway. What ended up doing for me was highway driving. From when I cleared the codes to when EVAP became ready, about eight days had passed and I have completed over a dozen warm up cycles. I know ISTA says something like "leave the car in standing position all night" or something but this didn't work for me. The EGR monitor not setting in this case was beyond my comprehension so I focused on trying to get the EVAP monitor set. During the EVAP portion of the drive cycle, drive in a smooth fashion to minimize 'fuel slosh'. 3.The Evaporative Monitor can only operate during the first 30 minutes of engine operation.
#Evap system monitor reset how to#
I found a GM Tech explanation of how to get it to work and it was awful. Fuel tank level should be between 1/2 and 3/4 fill during the drive cycle in order to allow the EVAP monitor to run. It is a combination of MPH, distance and time I believe. It isnt a mile marker you need to hit either. I rebuilt the N20 on another 2013 car and started it up and the EGR monitor set in a few seconds of it running for the first time. It is the single most difficult system to get to a ready status. This is puzzling because I don't think these cars have an EGR system so I would think the EGR monitor would set immediately or it wouldn't include it in the readiness check. The engine coolant temperature is between 4.4C and 35C (40F and 95F). I know that EVAP is the most difficult monitor to reset because the required conditions are the most difficult to achieve. Fuel tank is about 2/3 full, which is within the 1/4-3/4 allowable range. All of my monitor set pretty quickly with normal driving except for the EVAP and EGR monitors. EVAP SYSTEM MONITOR (KEY OFF TYPE) (a) Preconditions The monitor will not run unless: The fuel tank is less than 90 full. The scanner is showing perfectly clean, no codes of any kind, but the EVAP readiness just wont set. In my state (Georgia) you can have one monitor not set and still pass emissions.
#Evap system monitor reset update#
I wanted to update this thread with my experience getting my EVAP monitor to ready status on my 2013 328i in case anyone else finds they need help with it too.
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