A while ago 52 error came on and my knock sensor was off. I replaced it with a good one (OEM) off another 4efte engine , worked for 4 days and today the same thing.. off.. 52 error check engine light on and rich condition etc etc. I have triple checked the wiring with a multimeter and everything is fine. The wire is 100% good as well as the plug too. Is it my luck? Or I have to worry about it?