Hello guys, I have a sonata 2006 with 2.4l automatic with gas installed, since this is my car, I've had it for like 6 months now. And I got an error code (the photo attachment). The problem I'm having is when I put either in reverse or drive my car just like shakes one time. I've been to 2 mechanics and neither of them have solved the problem. I have like almost no knowledge about cars, but what I've read in forums, that basically I have a tcm(transmission control module) in my car, and near that tcm(or inside) is a relay which is malfunction or some problems with it. Am I correct? And also I tried to locate the tcm module, but couldn't find a specific location for it, and searched my car and couldn't find it either. And the only service manual I could find on the internet was like 15 dollars, so maybe someone could explain where the tcm is located ? And like how should I solve it. Can it be done by myself or should I send it to a mechanic. Would like to save money and do it myself. Also since this problem is present, my car is in limp mode, which means I only drive in third gear.