Question

I got the engine code P1807 on my 2006 Nissan Frontier. The truck keeps throwing a service engine light 4-wheel drive comes along and the truck won't go over 20mph

Answer 1

P1807 Output shaft revolution signal (TCM)

When it comes to this code , this is the difficult one, for starter replace the output shaft signal, rest the CK ENG LT and test drive, if this code reappear the TCM would have to be furthered inspected for the problem

Answer 2

P1807 Nissan Code - Vehicle Speed Sensor A/T
Read more: https://www.autocodes.com/p1807_nissan.html