I have a 2001 Maxima with about 95,000 miles on it. A few months ago
the check engine light started turning on for about a day or so at
random intervals. Every time the code was P0420, and after doing a
little searching I found out that TSB #NTB00-070a will supposedly fix
this problem.
So I took my vehicle to the Jim Click Nissan Dealer here in Tucson
(first time I've ever been there) and they told me that the O2 Sensor,
front pipe, and Catalytic Converter needed to be replaced (which would
cost $1400). I told them to not do anything yet.
I did a little more searching and found the actual TSB document and it
says that the first and only diagnostic that they should have done is
to check the ECM Part Number to see if it is faulty. The TSB document
says that the ECM P/N can be found on the Consult-II self-diagnostic
print out, but is there some way that I can find the ECM Part Number
myself to see if they're just trying to rip me off?
Thanks,
Dave
