Transmission not shifting properly and AT light turns on

Tiny
RYU24
  • MEMBER
  • 2008 MAZDA 3
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 165,896 MILES
AT light comes on after third gear and it gets stuck on fourth gear and fifth gear never kicks in why?
Wednesday, July 6th, 2022 AT 2:34 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,973 POSTS
This sounds like you have an input shaft speed sensor that is not working correctly but to be sure we need to run the codes; this guide can help, and I have the sensor location in the diagrams below:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Wednesday, July 6th, 2022 AT 7:58 PM

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