I've got strange problem of lighting check engine light when I switch to 5th gear and revs reach VTEC engagement point. I've got this point at 5.200.
I checked ECU error code and it's code 22. The strange thing is that VTEC works great on every other lower gears and problem appears only on 5th gear, so I don't know how to identify the source of this problem.

Mayby somebody has an idea? I will appreciate any help.

WojtekG