New cat and throwing P0038

Johny · Post by **Johny** » Mon Oct 25, 2010 9:38 pm

Hey guys, I've read up that the P0038 code reads as "Heater Circuit High Voltage" and probably means that the O2 sensor is bad - might have shorted or something like that.

My question is, before I got the new cat and flex pipe in, I was not getting any engine lights or error codes so why is it showing now. On a side note, my dads OBD2 scan tool isn't picking up any faults, anyone know why not?

(PS: my old down pipe didnt have a flex in there, but the new one does - could this make a difference?)

Thanks in advance guys

Post by **occasional demons** » Mon Oct 25, 2010 10:02 pm

The o2 sensor might have been borderline fail, and the trauma of swapping it into the new pipe might have killed it. Or the wires got yanked/damaged in some way. As long as the flex (I'm assuming in the mid pipe, after the cat) does not let the mid pipe sag, it will be fine.

Johny · Post by **Johny** » Mon Oct 25, 2010 10:09 pm

Yeah that's what I suspected. Thanks a lot bro

Edit: Turns out it the mechanic that put in the new pipe, broke the clip so the wire wasn't fully inserted.