Went for my inspection today and it failed due to Evap & O2 monitors not being ready.. I have not had any issues with the truck, no engine lights or anything. I went home and noticed the K&N tube had disconnected from intake manifold, but I have never gotten any check engine lights for air leak? Would this cause those 2 monitors not to have a reading. If it was not connected tightly the mass air flow sensor should have been tripped no?

 

No MAF sensor in Dodge hemis. Otherwise I can't help, sorry.



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maybe the air inlet temp sensor is not connected fully ?

 

Very unlikely your k&n tripped the o2 fault (readiness test) and I can't see how it would have affected your evap system in any way. Are you positive that your battery hasn't been disconnected or is it in a very low state of charge? Also you havent had any OBD diagnostics done? This was a problem in 99-06 Chrysler PCMs malfunctioning by not reading the o2 sensors and not completing readiness tests but I've yet to hear a problem in newer than 06' PCMs.

 

Thanks for feedback. I'm un sure why this happened but in any event I gave it a 50 mile drive cycle yesterday and scanned it. Both monitors were functioning properly so it passed inspection no problem. Thanks again.

 

Nice. Got to love automotive randomness.