The car engine P2794 Code may come due to several reasons. You need to fix the car engine problem. Eliminate the air sieve box meeting so you can entree the program range switch. You can turn the key to the ON position, but do not start the automobile. Transfer the shifter to the unbiassed position. Align the position holes between the shift lever and the switch. Insert a 5mm drill bit into the change hole to verify the proper position for the neutral state. You should check the check list and those are Engine Oil Temperature Sensor Malfunction, Ignition/Distributor Engine Speed Input Circuit Malfunction and Clutch Position Sensor Circuit Malfunction.