CrazySteve911
Need Bigger Tires
- Location
- Loris, SC
Got this code today. Catalyst system effiecency below threshold in bank 2. What is this.
I know this is a gen one thing..
But gen2s fry cats like crazy
That us all
The bung came out on one of my front O2 sensors as well. Keep the socket on the sensor or grab a 15/16" wrench for the sensor and a larger (if you have it) wrench or channel locks to hold the bung and start turning.
0420 / 0430 read as such:
Cat isn't warming up properly (fast enough). 1st cause listed is the cat proper, then it goes to exhaust leaks, air intake leaks, injector problems, bad plugs, and bad timing. Bad O2 sensor isn't listed as a culprit, as they should throw their own codes, but it could happen.
My usual fix in this case is to throw a CEL eliminator (either official or a drilled out spark plug non-fouler) on the rear sensor. If that doesn't work then it's probably the cat.