How do you know if the 0/2 sensor is working?
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 4 of 4
Cadillac Seville / Cadillac Eldorado Forum Discussion, How do you know if the 0/2 sensor is working? in Past Cadillac Vehicle Discussion; Is there a code for it? There is, isn't there? I've never seen one set a code.. And I don't ...
  1. #1
    FredMaxwell's Avatar
    FredMaxwell is offline Cadillac Owners Enthusiast
    Join Date
    Mar 2006
    Location
    Midwest
    Posts
    610

    How do you know if the 0/2 sensor is working?

    Is there a code for it?
    There is, isn't there?
    I've never seen one set a code..
    And I don't think there was an alert when I drove without one for a couple days

    How do I know for sure it's working?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    94greencaddysls is offline Cadillac Owners Fanatic
    Automobile(s): 94 sls
    Join Date
    Feb 2005
    Posts
    235

    Re: How do you know if the 0/2 sensor is working?

    If you have onboard diagnostics you can moniter the voltage and cross counts through that but if you dont a simple scan tool might be able to read that also.

  4. #3
    NoFear365@yahoo.com's Avatar
    NoFear365@yahoo.com is offline Cadillac Owners Fanatic
    Join Date
    Oct 2003
    Location
    Staten Island, NY
    Age
    35
    Posts
    327

    Re: How do you know if the 0/2 sensor is working?

    PC0139 is one code for the rear O2 sensor for Slow Responce.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,756

    Re: How do you know if the 0/2 sensor is working?

    Yes, there are codes for it as NOFEAR has shown. If they are not working, it will set a DTC and the SES light. They are monitored.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting