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Re: Ray - help on monitoring drive cycle of CAT(O2 sensor) - more questions
Ray - update:
CAT monitor is finally done after I followed the instruction(for drive
cycle) obtained from Toyota techinfo.com. The P0420 disappeared and
didn't come back. Everyting is passed and no faulty code is stored. Why
is that? and what happened at first time(P0420 appeared and I had it
cancelled unaware that CAT is still under warranty)? Is CAT good or O2
sensor is marginal? Currently my 2001 Corolla has 5K miles shy from 80K
for CAT warranty, I may save money if the faulty code occurs before 80K
miles. What is your suggestion?
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