just started showing p0421
I don't have headers installed, but my understanding is that this fix will kill the CEL none the less for me.
However the tradeoff is that if my cat is in fact dieing, (as opposed to the O2 itself) I will see reduced fuel efficiency and performance?
how would I go...
could also be the switch at the handle itself. it just a peice of crap mini spring that separates two contacts. tho i see the brake fluid being more likely.
had to take the tank off with the sending unit still attached, then bang on them with an impact screw thing. eventually they came. off, then put the tank back on.