Getting trouble code 20 and engine light....??

[Apex18]

I just started my sled, and i'm getting the trouble code 20 and engine light. Anyone else ever have this? It says in the codes that defective values are detected due to the internal malfunction?? I don't liek the sounds of that at all...any help is greatly appreciated. Jord

 

[Len Todd]

Faulty air pressure sensor or intermittant connection to it.

I posted the details for testing this the other day for another user. You might try a search on "pressure sensor."