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SES light with 2 codes....P0155 & P0174???

This is a discussion on SES light with 2 codes....P0155 & P0174??? within the General Help forums, part of the LSx Technical Help Section category; I have a 2000 T/A. The SES light came on yesterday, so I went to AutoZone to read the codes. ...

  1. #1
    danman
    Guest

    SES light with 2 codes....P0155 & P0174???

    I have a 2000 T/A. The SES light came on yesterday, so I went to AutoZone to read the codes. P0155 and P0174
    Anyone know what the problem is? I have 02 sims on the back sensors. Is there a webpage that shows what all the codes are? I used to have a print out of them, but I can't seem to find it now.

  2. #2
    Member
    Join Date
    Sep 2005
    Location
    Pueblo, Colorado
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    Black
    1998 Pontiac Trans Am


  3. #3
    danman
    Guest
    P0174 - Fuel Trim System Lean Bank 2
    P0155 - Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)

    What does this mean? Which 02 sensor is it?

  4. #4
    Senior Member
    Join Date
    Jul 2005
    Location
    Jacksonville, FL
    Posts
    2,725
    Both codes are for Bank 2 (passenger side) Sensor 1 (precat) sensor.

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