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my car jerks and buck when i am driving, if i press the gas pedal hard it goes away if i slightly press the gas then it jerks.
Vehicle: 2004 mazda 6 s 3l

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HI there

This code points to an issue with the ecm, here is some info on the code for you.

U0100 MAZDA - Lost Communication With Engine Control Module

Read more: https://www.autocodes.com/u0100_mazda.html

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