O2 sensor locations on 98 Deville Concours
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, O2 sensor locations on 98 Deville Concours in Past Cadillac Vehicle Discussion; I am getting a p0143 code indicating o2 sensor circuit low volts bank 1 sensor 3. Where is this sensor ...
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    millerconcourse is offline Cadillac Owners Member
    Automobile(s): 98 deville concourse
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    O2 sensor locations on 98 Deville Concours

    I am getting a p0143 code indicating o2 sensor circuit low volts bank 1 sensor 3. Where is this sensor located and is it something a novice mechanic could replace?

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  3. #2
    stoveguyy is online now Cadillac Owners Connoisseur
    Automobile(s): 96 STS, 140k
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    Sensor 3 is after cat. U need to get under car. If you have warm garage or car lift its not hard. The sensor harness is secured behind thin sheet metal guard. Buy an acdelco sensor. Not a no name brand

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    Ranger is offline Cadillac Owners Member
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    Re: o2 sensor locations on 98 deville concourse

    Quote Originally Posted by stoveguyy View Post
    Bank 3 is sensor behind cat. U need to get under car. If you have warm garage or car lift its not hard. The sensor harness is secured behind thin sheet metal guard. Buy an acdelco sensor. Not a no name brand
    I think you mean Bank 1 Sensor 3

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