Help, i've gotten this code 43 , seams like forever, tried everything from replacing the module to the knock sensor, probing wires, checking grounds. I have Hedman headers, and thought that might cause the knock sensor to react, but disconnected it, reset the computer and still the code came back, last time i checked the Esc module was 75 bucks, and I already replaced it once. This is one of those bugs I just cant find. Any advice or relative experiences would be greatly appreciated. 150,000 on the motor, but runs strong, it is the first year TBI so anythings possible I guess.