On 3/13/09 1:53 AM, in article
f70d4ab9-c915-45e7-a213-0ae61f61c270...oglegroups.com,
"waynewright" <waitneight@gmail.com> wrote:

> 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.

Secondary heated oxygen sensor (this is the one that is just past the cat)
is the thing that triggers the Catalyst efficiency alarm. Address the
oxygen sensor and the catalyst one will probably go away.

The TCS code is unfortunately not related to the auto-trans recall. It
means the transmission shift control computer has a problem. The recall had
to do with internal clutches failing.

As another poster suggested, this many codes all at once sounds like
something scared the computer. Reset & see which one(s) come back then
proceed accordingly. To reset, find the radio backup fuse (7.5 amp, usually
in the under hood fuse box), and pull it for 10 seconds, or disconnect the
battery neg cable for at least that long. If the radio asks for its code,
you had it disconnected long enough.