20 Most Recent 2006 Toyota RAV4 - Page 8 Questions & Answers

It may make a difference if this is a US model or not. The US code could be for a baro sensor for the engine or one of the O2 sensors. Which would not be connected to the transmission.

This indicates that a problem exists in the control system of the 4WD system. This can be mechanical like a sticking clutch in the transfer case or electrical in nature. You need to have the dealer do special testing to determine what is the actual cause. If you have never changed the fluid in the transfer case do that and see if the light is mechanical in nature from dirty fluid and a sticky cone clutch

Yes it is better left to a pro.