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Check engine light is on and AT light is on. Shifts with clunk and not drive well
Vehicle: 2010 Mazda 3, 2.5 engine automatic

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HI there

This code means there is a loss of communication with the transmission control module. Here is some info to help with the code.

U0101 MAZDA - Lost Communication With Transmission Control Module

Read more: https://www.autocodes.com/u0101_mazda.html

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