pdude
Newbie
Will a 1994 Chevy with OBD1 detect issues with O2 or a Cat? I read somewhere it didn't, but my CO detector goes crazy when my truck is in the garage with the CO detector close by as it goes to 240 PPM. Not sure it will pass smog in CA which I have to do soon. I have a DTC code for my ignition only (42) so maybe I will need to fix more that that to get it to pass.