Link between P0420 and O2 sensors?
Link between P0420 and O2 sensors?
Guys,
I just got a P0420 (three way catalyst). We've discussed this at length. A few months ago, I got a P0134 (Bank 1) front bad 02 sensor. I got the SES cleared a while back but didn't replace the sensor. Could these two be related? Could the bad 02 sensor cause the malfunction of the three way catalyst. Or do you think it's simply a matter of doing the TSB to get the ECU reflashed?
Thanks.
I just got a P0420 (three way catalyst). We've discussed this at length. A few months ago, I got a P0134 (Bank 1) front bad 02 sensor. I got the SES cleared a while back but didn't replace the sensor. Could these two be related? Could the bad 02 sensor cause the malfunction of the three way catalyst. Or do you think it's simply a matter of doing the TSB to get the ECU reflashed?
Thanks.
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