P0135 error code on my 2000 Toyota Camry V6.

[kutra]

Hi:

I got the "Malfunction Indicator Light" (aka the Check Engine Light, I believe) on my 2000 Toyota Camry V6. So I took it to Autozone and the instrument showed 2 error codes. Both the error codes were the same:P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1).

1. Are the error codes absolutely accurate in pinpointing the problem?
2. Do the 2 error codes mean I have to change TWO oxygen sensors?
3. If I buy the Bosch OEM part myself, how much would a mechanic typically charge to replace ONE or TWO O2 sensors?
4. Anything I should be aware of when I talk to a mechanic?
5. How serious is this problem? That is, how long can I continue to drive till I get it fixed?

Thanks,
K

[Mike Gerber]

1. The error codes point you in the direction. With O2 sensors it is either the sensor itself, the wiring to the sensor or possibly an ECU porblem. It is most likely the sensor itself.
2. No, they both point to the same sensor.
3. Most mechanics prefer to install parts they get themselves. First, they make a bit of money on the parts. Second, if there is a problem with a part, they will only be responsible for the labor to replace it if they both purchased and installed the part themselves. I would call around to shops in your area and ask if they will install a sensor you bring in. Some will and some will not.
4. Nothing other than what I mentioned in answer number 3.
5. The default setting when an O2 sensor fails is usually a richer than normal fuel mixture. You can drive it, but I would get it fixed as soon as possible. Running a richer than normal mixture can damage some other components; mainly the cat converter.

Mike

[toyomoho]

Is the current sensor Bosch, a few TN members have commented about issues with replacement Bosch sensors.

If you can find the cars service info, the sensor can be tested. Try the link below"

http://oregonstate.edu/~tongt/camry

[marc780]

Change your own o2 sensor, they are pretty easy to change usually unless they are really rusted in there. If you can find em, you can change em yourself.

I dont like Bosch, i'd choose almost any other brand if available. I dont believe they make as good quality parts as the Japanese. Choose NGK or some other japan brand first if available.
http://www.ngk.com/results_app.asp

The o2 sensor is almost $100 each one. imagine what they are going to charge you with their parts markup and labor.

If you dont want to replace both at the same time, there might be another option for you. If you live near a pick a part junkyard it might even be feasible to grab an 02 sensor from a junk car - and just take a chance it still works. Then replace ONE sensor with the junkyard one - disconnect the battery for a minute and reconnect it to clear the code - then see if the code goes away. If its still there, put the one you removed back in and try the other one. If the code goes out now, you can chance driving on the junk one for a while (they can last up to 100,000 miles or more) or just replace the junkyard one with a brand new one.

[kutra]

Thank you everyone for your replies.

Regards,
K