Hello all,
I have a 2003 HCH with IMA and check engine light on. I took it to autozone and it has the following codes P0420, p1600, p1639, p1634 and p1445. The car drives smooth, but the battery doesnt show to be charging nor assisting. I still get over 40 mpg. Autozone did not know what the codes meant so im hoping to find some answers before taking it to the dealer to have it checked out.