thomastractorsvc Posted February 2, 2022 Share Posted February 2, 2022 Just had the truck in the dealer for a couple dealer repairs while there I had them reseal a EUP that was wet. After they got the truck back together the truck is throwing 2-9 code that says Combustion Air Humidity TBD. So I ask them what happened when they had everything apart deer in the head light stare because the sensor is $325. My concern is that its not a regular fault and they said they couldn't figure out what was going on and wanted to throw a sensor on it. Any one ever have this issue and anyone know the part number? I cant find it in Fleet Impact buts it is mounted in the intake tube and they didn't want to give me the part number for some reason. Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/ Share on other sites More sharing options...
Popular Post fjh Posted February 2, 2022 Popular Post Share Posted February 2, 2022 (edited) Is it even plugged in ? Its possible they took the air cleaner off to access an reseal the EUP and didnt plug it back in done that a few times my self! Any one ever have this issue and anyone know the part number? I cant find it in Fleet Impact buts it is mounted in the intake tube and they didn't want to give me the part number for some reason. That there is no surprize the impact program is A POS ! Need to be a rocket scientist at times to operate it! Edited February 2, 2022 by fjh 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488322 Share on other sites More sharing options...
Joey Mack Posted February 2, 2022 Share Posted February 2, 2022 yep, 'F' is right.. the plug is probably hanging there behind the elbow in the air duct. the plug is flat, about 1 1/2" wide. too funny, I still forget that plug at times myself.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488323 Share on other sites More sharing options...
R.E.D Posted February 3, 2022 Share Posted February 3, 2022 18 hours ago, thomastractorsvc said: Just had the truck in the dealer for a couple dealer repairs while there I had them reseal a EUP that was wet. After they got the truck back together the truck is throwing 2-9 code that says Combustion Air Humidity TBD. So I ask them what happened when they had everything apart deer in the head light stare because the sensor is $325. My concern is that its not a regular fault and they said they couldn't figure out what was going on and wanted to throw a sensor on it. Any one ever have this issue and anyone know the part number? I cant find it in Fleet Impact buts it is mounted in the intake tube and they didn't want to give me the part number for some reason. Yea ..the deer 🦌 in the headlights look is all too common in my area.. specially in the mack motors , I think macktechnician used to call it gray engine amnesia ... around here, taking your truck to the dealership is as useless as tits on a boar hog.lol 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488380 Share on other sites More sharing options...
Joey Mack Posted February 3, 2022 Share Posted February 3, 2022 so true.... Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488381 Share on other sites More sharing options...
Vmac3 Posted February 4, 2022 Share Posted February 4, 2022 On 2/2/2022 at 9:12 AM, fjh said: Is it even plugged in ? Its possible they took the air cleaner off to access an reseal the EUP and didnt plug it back in done that a few times my self! Any one ever have this issue and anyone know the part number? I cant find it in Fleet Impact buts it is mounted in the intake tube and they didn't want to give me the part number for some reason. That there is no surprize the impact program is A POS ! Need to be a rocket scientist at times to operate it! Took me 2 flippin days to find this part number. Here you go Part#20559022 Air Temperature/Humidity Sensor V Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488523 Share on other sites More sharing options...
thomastractorsvc Posted February 9, 2022 Author Share Posted February 9, 2022 Thanks to all who replied yes it was plugged in. I tested it today and used some ether to clean it as it had something oily dirt on it. Supposedly they took it out and tested it and said it was still good that wasn't what I found. this was the part number I found stamped 64MT463M converts to 20963779 PAI FSU-0487 1 1 Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-488982 Share on other sites More sharing options...
fjh Posted February 10, 2022 Share Posted February 10, 2022 Thanks for posting your fix Bro! Quote Link to comment https://www.bigmacktrucks.com/topic/69139-2005-e7-400-ai/#findComment-489058 Share on other sites More sharing options...
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