Hi Im new to the form but I have done some research and can't find anyone talking about the problem I am experiencing. I have an 07 sportsman 800 efi with the topical 41/45 code. Yes, I know the plug wiring into the plug goes bad causing this problem. I just recently replaced the plug which cleared the 41 code. Here's my problem. I still have the 45 code. The code is 45 - Barometric Pressure Sensor: Circuit Low Input
I don't know if this means wiring or low air volume meaning an air leak? Has anyone been there? Can anyone please assist? Thank you!
Ryan

 

Look at this "sticky post" on 700/800 efi problems.https://atvconnection.com/forums/pol...ap-wiring.html 80% of the time this thin wiring and the connectors on the sensors not the sensors themselves cause problems. Most complaints are back firing,erratic idle,hard starting. Get the t- bap harness kit from here and should solve the problem.Only The Best

 

I reviewed this a few times in the past. That's what made me buy the replacement kit. I replaced the wires and connector as it stated. It made 41 go away but when I start the bike there is no check engine light for ruffly 30 seconds, then 45 comes back on. My connections are solid. Just wandering if there is something I might have missed or where could the next place to look be? Thanks again for your help.