Erratic & Harsh Shifts: A Part Update
A 2012 Hyundai Sonata using a 2.4L engine and an A6MF2 transmission comes in to Covington Automotive with erratic and harsh shifts. When the vehicle was scanned for codes, transmission-fluid temperature-sensor codes P0711 and P0713 were stored. P0711 is a rationality check code while P0713 is a circuit high- input code.
IMA (Integrated Motor Assist)
In an effort to improve fuel economy, drivability, durability, and cost, many changes have occurred to automatic transmissions over time. In the last decade however, the proliferation of new models has been unending. Step-type transmissions have ratcheted up the gearing from old-time three- and four-speeds to five- through seven-speeds.
