2001 Toyota Opa 1.8L with code P1725 and 4th gear problem. After overhaul, my 1zz-FE engine gears change normal up to 3rd gear but won't go to 4th gear at all.
Hi there,
This code indicates an issue with the NT speed sensor. Here is some info for you.
P1725 TOYOTA - NT Revolution Sensor Circuit Malfunction Read more: https://www.autocodes.com/p1725_toyota.html
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