B2 Catalytic Converter

[Montana]

Seems that my B2 catalytic converter is working on a low efficency. Is it true that it is one of the few parts that I have to get from the dealer? Code I am getting is P0430



So as for the wanted post here. Does anyone have one in the magic bag of tricks?

[normsadler]

My cats where plugged up last year and throwing that code. I had them both replaced (if one is plugged, the other is likely close) with after market high flow cats. Also replaced a bad O2 sensor, and that fixed up the engine light. After a few more minor parts (anti knock sensors and evap vent) and a professional tune from MGS Custom, and I haven't had my engine light on for months! Love it! <img src='http://www.canadianhummerclub.com/forum ... ght_on.gif' class='bbc_emoticon' alt=':right_on:' />

[Montana]

Thanks, I would look doing just that. I hate that engine light staring at me! Drives me crazy and its a short trip!

[dwaxman1]

Steve at Master MEchanic did mine a few years back..same time i did my exhaust....well worth it...the one cat is on an elbow.. it causes issues...