P0766 Mazda -

Question

Car is a 2005 Mazda 3. Had the transmission not change beyond 2 ( with AT written on the dash)and changed the valve body, worked ok for a couple of weeks and problem came back. Changed the transmission and seemed fine for about two months till the problem started again. Was told the problem was from the ECU so a new ECU was reprogramed to the car. then changed the valve body again. was fine for a week, and issue just came back. getting fault codes P0766 and P0762.... what could be the cause of this and what can I do to finally solve this

Answer 1

Hi there,

These codes indicate an issue with shift solenoid C and D. Here is a list of possible causes.

P0766 MAZDA - Shift Solenoid 'D' Stuck Off

Read more: https://www.autocodes.com/p0766_mazda.html