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Oxygen Sensor bank 1 sensor 1


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where is this sensor? Don't have a drawing showing. P0135 Bank 1 sensor 1. Thanks. Already changed the one by the radiator (P0153 - Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1)

, now I have another out. Ok though. I got all 4. Just need to know which one this is to change next.

Edited by mhinchley
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Unfortunately, that is the one that is extremely difficult to reach. It is located between the engine and the firewall where there is just no room to work. :(

There's a special socket that helps with the job.

Good luck!

photo-36.jpg

Happiness is owning a Cadillac with no codes.

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Here's a pic of the hard-to-reach animal as viewed from the back of the engine![attachmentid=2405]

Thanks. Got her done today. Was hard to get too. I went and bought an 02 sensor socket though and worked out well. Hard to get out, but fell right into place with the new one!

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  • 3 weeks later...

My cousin in Virginia is getting this code in a 96 SLS:

Bank 1 Sensor 2 - pre-cat

Has anyone changed this O2 sensor? Is it easy to get to? And is it easy to remove? I am going to get an dedicated O2 socket and I will bring all of my breaker bars and handles. My guess is that this one is easier than the one in the rear manifold. I am driving down on Friday, Any ideas or tips? Thanks

Edited by BodybyFisher

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Good idea about the ramps Jim! I would not have thought about that... I will do that. I would imagine that its easier to remove the sensor while the muffler system is cold. Thanks

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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B, actually letting it run for about 2 minutes would help get the thing loose. I've had to do that changing exhaust gaskets, cold you couldn't budge them but get some heat in the manifold (not HOT) and the bolts came right out. At some point I'll get you to help me upload the pic's I got of the Cien and Sixteen. Where in Va. is your cousin?

Joe

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B, actually letting it run for about 2 minutes would help get the thing loose. I've had to do that changing exhaust gaskets, cold you couldn't budge them but get some heat in the manifold (not HOT) and the bolts came right out. At some point I'll get you to help me upload the pic's I got of the Cien and Sixteen. Where in Va. is your cousin?

Joe

Thanks for the tip. She is in Norfolk, Va. If you email me those photos I will upload them for you, mike

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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My local Caddy dealer wants $131 for the O2 Sensor, OUCH...

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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send me an e-mail address and I'll shoot them over, take a camera there may be a few Carriers in Norfolk :D maybe even the Enterprise :rolleyes:

Be Safe

Joe

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....take a camera there may be a few Carriers in Norfolk :D maybe even the Enterprise :rolleyes:

Be Safe

Joe

The Homeland Security folks have no sense of humor regarding cameras around military installations.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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On both I changed so far, I had the engine hot. Sure, I burnt my hand a couple of times........but I am also sure it made them come out easier.

Thanks for that. How difficult is the pre-cat sensor to get out? Did you get it from under the car, what tools did you use? Thanks

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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  • 1 year later...

And remember, No SILICONE GREASE on the connectors! The reference O2 sample is pulled from the space between the wires of the connector (fresh air). Plugging that space with any kind of grease may render the sensor useless.

Never underestimate the amount of a persons greed.

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