I have a 99 Odyssey with 114k miles. At 103k miles the MIL came on
with the codeP0420.I recently had a timing belt service done by a Honda
dealer, they said I needed a new catalytic converter. I have been
driving since 1968 and have favored Hondas. I have never needed a cat.
before and I am starting to lose confidence in Honda's supposed "great"
reliability. Could the cat. really be bad or could it be something
simpler like an oxygen sensor?