Help: OBDII P0130, P0133; MIL / check engine light

[towwang]

Hello,

This is regarding my 1997 Corolla CE, 1.6 liter engine. The check engine light turned on, and I got ahold of a hand-held OBDII scan tool. It read out 4 DTC's (diagnostic trouble codes):

1 of 4 = P0130 Heated Oxygen Sensor Circuit - Bank 1 Sensor 1
2 of 4 = P0133 Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1
3 of 4 = P0130 Heated Oxygen Sensor Circuit - Bank 1 Sensor 1
4 of 4 = P0133 Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1

Can anybody help answer my questions...

1) The fact that codes 1 and 2 are repeated on 3 and 4 means that after a memory reset, the system detected the same two DTC's again? I did disconnect the battery to make sure it was not a sporadic malfunction. The check engine light did turn on again a few days later.

2) Which sensor is on bank 1 sensor 1? Before or after the catalytic converter? I found the repair guide at
http://www.autozone.com/servlet/UiBr...a0.jsp#hd1-1-3
and was wondering which sensor this illustration corresponds to.

3) Should I try to order a replacement sensor and replace it myself? (I have not done any car repair work beyond changing sparkplugs, tires, replacing battery, etc., but am good at fixing computers, VCRs, etc. Just wanted to get a feeling of the required skill set.)

4) If the answer to 3 is no, how much is this going to cost me? Can anybody recommend a good repair shop in the San Jose, CA area?

5) I know this O2 sensor problem is common; has anybody gotten repair covered under warranty? I found two TSBs that may be relevant:
SS002-03 DEC 03 Engine Controls - O2 Sensor Monitor Threshold Values
EG003R-02 MAR 02 Emissions - OBD II Readiness Monitor Drive Patterns

but haven't found the text for the "SS002-03" TSB. Is this a lead worth pursuing?

Thanks for all help!

[Chris Corolla S]

Moved to tech...

[88 LE]

Originally Posted by towwang

2) Which sensor is on bank 1 sensor 1? Before or after the catalytic converter? I found the repair guide at
http://www.autozone.com/servlet/UiBr...a0.jsp#hd1-1-3
and was wondering which sensor this illustration corresponds to.

Bank 1 sensor 1 = before cat.

Bank 1 sensor 2 = after cat.

The one shown in the illustration is the sensor before the cat.


Component locations:

http://www.autozone.com/images/cds/g...3d8016a6e9.gif

3) Should I try to order a replacement sensor and replace it myself? (I have not done any car repair work beyond changing sparkplugs, tires, replacing battery, etc., but am good at fixing computers, VCRs, etc. Just wanted to get a feeling of the required skill set.)

Its easy to replace the O2 sensor. Just a matter of unbolting it and replacing it.

If you get a direct replacement, it'll plug right in. If its a universal O2 sensor, you'll have to chop the plug off your old sensor and wire it to the new sensor.

[fredk]

get an oem sensor

[towwang]

88 LE:
Thanks A LOT for the extra illustration.

fredk:
Gotcha. I guess that means doing mail order. Can you give any recommendations as to who/where to call to order the O2 sensor?

EDIT: Oops, just saw the vendor link at the bottom of the page. Now that's an ad placed at the right forum!

[fredk]

toyota dealer?

[88 LE]

Originally Posted by towwang

88 LE:
Thanks A LOT for the extra illustration.

No prob.

Gotcha. I guess that means doing mail order. Can you give any recommendations as to who/where to call to order the O2 sensor?

toyotaparts4u.com

partznet.com

Theres a bunch of online places that sell Toyota parts. Do a search on this forum.

Also try a local autoparts store.

[towwang]

Althout quite a late posting, I just wanted to reiterate my sincerest thanks to the people who replied to my original post. I did the repair myself many months ago, and saved quite a bit of money and time. You folks, and this web site, are GREAT!!!