Catalyst monitor will not clear. Need to pass CA emmisions test.
What is your question?
Disconnected battery then CEL came on when reconnected it. CEL went out, then got CA emissions test and failed. 6 out of 9 monitors read "INCL". 7 finally cleared. PM filter and catalyst monitors still will not clear after several drive cycle attempts and about 400 miles driving. Does California allow 2 INCLs? M-B Sprinter 3500 diesel chassis is on a 2018 Winnebago RV with 20K miles. Sprinter chassis is a 2017 model.
What makes this problem better or worse?
Drive cycles not working to clear 2 emissions monitors
How long has your 2017 Mercedes-Benz Sprinter 3500 had this problem?
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Hello, no - California only allows one incomplete monitor, usually evaporative emissions.
Disconnecting the battery is a bad idea - you just reset everything, and yeah - it's difficult to get all the parameters to set. Especially with a Diesel particulate filter and regeneration operation -- it may require more driving to clear that monitor.
There's a great article on RepairPal about drive cycles:
https://repairpal.com/drive-cycle-issues
Other than that, I suggest: half tank of fuel. Cruise control on open road at 57 mph. Cruise like this for about 15-20 minutes. Decelerate, stop. Accelerate again, cruise at 57 mph. Check monitor status.
With the DPF, it's hard to know how that one will do, but the rest should clear.
Good luck.
