allanfan

Hi, I've a 2016 E250 Bluetec sedan, currently no check engine light or any fault code, but 4 monitors not ready: Cat, EGR, O2 & heated O2. Any one know the exact drive cycle to set these monitors ready? Thanks!

Separately, can Xentry manually set these monitors to "ready"?

mfab

I can't answer your question, but how did your monitors become "not ready"? I just had my starter battery changed and the emissions monitors stayed ready immediately afterwards.

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allanfan

I'm not 100% sure, as Connecticut doesn't require a vehicle to pass emission for the first 4 years, so this is the first time I need to pass test for a 2016 E250.

I think it might be because I cleared an engine fault code (P0004) in Sep this year.

kajtek1

Clearing the code reset readiness for sure.
How much time you have? You will find several driving cycles on the net, but none of them seems to be guaranteed.
But usually 100-200 miles driving gets the programs ready.
Most overlooked is the procedure of idling cold engine for few minutes. Forgot what it reset, but learned it the hard way as I never idle my engines after cold start.

allanfan

Need to pass by 12/31.

I have driven over 1,000 miles since clearing code. But it's all normal driving, not trying to drive any particular drive cycle. So far, only heated cat went from "not ready" to "ready". Cat, EGR, O2, heated O2 still not ready.

One thing I don't know is most of the "drive cycle" on the internet are presumably geared toward gasoline cars, not sure if diesel is any different.

allanfan

After trying this drive cycle (https://www.smogtips.com/smog-questi...63-Drive-Cycle), I'm now down to just 2 "not ready": Cat & EGR. Any tips on how to set Cat & EGR ready? Thanks.