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Thread: SES P0131 trouble code

  1. #1
    Join Date
    Jun 2005
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    SES P0131 trouble code

    Alright, my '02 5.3 just threw code P0131, 02 circuit low volts. Any Isea if that is just 1 sensor, or all 4?

    2002 ECSB, Nelson Tune, LS1 electric fans, 145A alternator, K&N FIPK, 160º T-stat, TB coolant bypass, Corvette servo, 4 headlight mod, blue LED gauge cluster

  2. #2
    Join Date
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    Quote Originally Posted by BlenderWizard View Post
    Alright, my '02 5.3 just threw code P0131, 02 circuit low volts. Any Isea if that is just 1 sensor, or all 4?
    To answer your question, it is only 1 sensor. PO131 is a low voltage SES. More specifically, for bank 1 sensor 2 which is located on the driver's side, after the catalytic converter.
    2001 GMC Sierra SL ECSB - Project
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    2009 GMC Sierra SLT ECSB - Sold

  3. #3
    Join Date
    Aug 2007
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    So basically, no big deal
    2006 Silverado
    Little Black Bitch

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