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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.

Vehicle: 2001 Toyota Opa 1.8L

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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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