Suzuki DF140 Cam Position Sensor

[Gary47]

Hello friends . . .newbie here. My 2003 Zuke DF140 showed a 2-4 code (cam position sensor). Relatively simple - one bolt and plug and the new CMP sensor was installed. I still get the 2-4 code om my tach. Some folks say that it "should" automatically re-set when the new part is installed. Some say to take it to the dealer and connect it to their computer ($175 a shot!!.) Motor runs great, but tops out at 4000 rpm - not like before when I could go above 5000. Your thoughts?

Thanks for looking and I welcome any constructive replies. Gary