Hello! I have a 2007 Quest S and I have gotten 2 codes p0340 and p0021. I replaced the camshaft position sensor (new after market) and cleared the codes. Drove fine for a day but now has lost power and is throwing p0340 code again. Battery reads good and there doesn't seem to be any issues with connections. If it's not the sensor what else could be throwing that code? Anyone have this problem as well?