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"surf" <surfunbear@yahoo.com> wrote in message
news:1151537590.725642.296220@d56g2000cwd.googlegroups.com...[color=blue]
>I went to autozone. The code is P0031
> which I was told is bank 1 censor heating circuit.
> the part alone is $300-$400, I may just have a mechanic do it, as
> I stopped working on my own cars once i got past the 73 chevy nova
> i had 20 years ago, plus my inspection sticker is dependend on it.[/color]

The OBD II Diagnostic Trouble Code (DTC) for bank 1 sensor 1 heater circuit
malfunction is P0135.

P0031 is not a generic OBD II DTC. Here is a list of generic OBD DTC's :
[url]http://www.obdii.com/codes.html[/url]

$300 sounds kind of high for an aftermarket O2 sensor. You may want to see
what the price is at your local Toyota dealer. You didn't mention what kind
of vehicle you have, but if itis a 4 cylinder, bank 1 sensor 1 is pretty
easy to reach. It will be sticking out of the exhaust manifold.

If you have a transverse-mounted 6 cyclinder engine, then bank 1 is towards
the firewall and harder to reach.
--

Ray O
(correct punctuation to reply)

[color=blue]
>
> Ray O wrote:[color=green]
>> "surf" <surfunbear@yahoo.com> wrote in message
>> news:1151283551.239311.232520@r2g2000cwb.googlegroups.com...[color=darkred]
>> > my engine check light is on, I think because the oxygen censor dectects
>> > oxygen in the gas tank. I had this problem a year ago. It may be
>> > because the gas cap is not on tight enough and I got careless and
>> > forgot about that. How long does it take for the computer to reset ?
>> > I live in Mass and need to get it inspected before july, but the light
>> > is still on.
>> >[/color]
>>
>> The oxygen sensor does not detect oxygen in the gas tank. The oxygen
>> sensor
>> detects oxygen in the exhaust gas.
>>
>> If your vehicle is a 1996 model year or later, the check engine light
>> will
>> come on if you do not tighten the gas cap enough. You should always
>> tighten
>> the gas cap until you hear several clicks.
>>
>> If a loose gas cap caused the check engine light and it is now tight, it
>> should go off by itself in a few days. As others have suggested,
>> Autozone
>> will check your codes for no charge. If you go to Autozone, write down
>> the
>> trouble codes and report back. If the only code is P0440, you can reset
>> the
>> codes and everything should be ok.
>> --
>>
>> Ray O
>> (correct punctuation to reply)[/color]
>[/color]