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02 sensor p0138

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Sandeep pathria, Nov 3, 2020.

  1. Sandeep pathria

    Sandeep pathria Junior Member

    Joined:
    Jan 31, 2019
    2
    0
    2
    Location:
    Vancouver BC Canada
    Vehicle:
    2005 Prius
    Model:
    Base
    Hi I got p0138 code for 02 sensor downstream and changed it but instead got 2 red symbols first I got 3 red symbols blinking cat evp and o2 sensor. Now cat symbol gone left with only 2 one for evp and second 02.gas mileage showing very poor. Any guidance will be greatly appreciated. Thanks sandeep
     
    #1 Sandeep pathria, Nov 3, 2020
  2. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,302
    4,241
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    How many km on the vehicle, and does it burn any oil?

    Did you replace the downstream O2 sensor with an OEM sensor (denso / toyota?), or something else?

    Which adapter/device/App are you using to scan for OBD2 codes (DTCs), and what are the DTCs currently?
     
    #2 SFO, Nov 3, 2020
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