Hi Folks. My 2001 Accord EX (4-cyl) is at 102,000 miles and throwing
all of these codes...

P0141 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2)
Heater Circuit Malfunction

P0420 Catalyst System Efficiency Below Threshold

P0700 Automatic Transmission Control System

P1166 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Electrical
Problem

P1298 Electric Load Detector (ELD) Circuit High Voltage

P1768 ???

I don't even know what the last one is. Any ideas for where a novice
should start? I'm out of work until my new job starts in about a
month, and PA state inspection just around the corner. Also, I was
part of the Sept 2002 auto transmission recall covering 1.2 million
Honda and Accura models, did need and got a new trans for free, but
the extended warranty on the news trans expired at 100k miles incase
that is relevant.