After getting a U-Bend/Resonator Delete and replacing my front bank O2 sensor, I drove out to CA from CO and when I was a few miles from my destination I punched it a few times to enjoy the lower altitude and cool temperatures. Well, I received an SES and once it was scanned it showed a P0430 for catalyst system inefficiency below threshold.
This apparently can be caused by:
- Exhaust leaks
- Bad O2 sensor
- Bad cat (Bad, BAD cat!)
Anything else? I haven't checked my exhaust for leaks around the new UB/Res delete or tapping the Cat. If the cat seems fine (doesn't smell like rotten eggs) and I can't detect any leaks, I guess I'm going to jump the O2 sensor with a 100K ohm resistor to spoof the PCM. Could this be potentially bad for my vehicle's PCM? Anything else I can try without replacing my O2 sensor (or putting in a spoof, as the SMOG Nazi's wouldn't like seeing a disconnected O2, even behind the CAT.) I tried resetting the PCM and deleting the code from memory, but it came back. I don't really want to spend money on a part that just tells me that my cat may be bad, need that money for a CAI and a 3.4" pulley, dangit!
Any and all help is appreciated!
This apparently can be caused by:
- Exhaust leaks
- Bad O2 sensor
- Bad cat (Bad, BAD cat!)
Anything else? I haven't checked my exhaust for leaks around the new UB/Res delete or tapping the Cat. If the cat seems fine (doesn't smell like rotten eggs) and I can't detect any leaks, I guess I'm going to jump the O2 sensor with a 100K ohm resistor to spoof the PCM. Could this be potentially bad for my vehicle's PCM? Anything else I can try without replacing my O2 sensor (or putting in a spoof, as the SMOG Nazi's wouldn't like seeing a disconnected O2, even behind the CAT.) I tried resetting the PCM and deleting the code from memory, but it came back. I don't really want to spend money on a part that just tells me that my cat may be bad, need that money for a CAI and a 3.4" pulley, dangit!
Any and all help is appreciated!