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We teach you in a theoretical and practical way to understand fuel trims using an automotive scanner. You will learn not only how to interpret the scanner data, but also how to analyze short and long term trims using the oxygen sensor. We briefly explain the open loop and closed loop data (OPEN LOOP - CLOSE LOOP) of the injection system and when to perform a parameter adjustment. 0:33 Introduction Fuel Trims 1:52 Practice: Short Term 3:16 Theory: Oxygen Sensor 5:43 Practice: Oxygen Sensor 7:03 Theory: Long Term 8:52 Parameter Reset #okcarcr #mechanics #mechanic #electromechanics #automobile #scanner #engine #diesel #OPENLOOP #CLOSELOOP #FUELTRIMS #ShortTerm #LongTerm #oxygensensor #fueltrims