Articles - Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification

Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification

This page provides information on the proper identification of engine bank 1 and engine bank 2 for correct A/F sensor and oxygen sensor replacement. Contains information that identifies engine bank 1 and engine bank 2 on the following engines: 1AZ-FE, 2AZ-FE, 2AZ-FE (PZEV), 1GR-FE, 2GR-FE, 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FE, 3UR-FE, 2UZ-FE, 5VZ-FE, and 1ZZ-FE.
  • Bank 1 (B1) refers to the bank that includes cylinder No. 1.
  • Bank 2 (B2) refers to the bank opposite bank 1.
  • Sensor 1 (S1) refers to the sensor that is located before the catalytic converters.
  • Sensor 2 (S2) refers to the sensor that is located after the catalytic converters.
  • Toyota Applicable Vehicles:

    Model
    Year
    Engine
    Bank
    Toyota 4Runner
    1996-2002
    Toyota 4Runner
    2003-2010
    Toyota Avalon
    1995-2004
    Toyota Avalon
    2005-2010
    Toyota Camry
    1994-2003
    Toyota Camry
    2004-2006
    Toyota Camry
    2003-2006
    Bank Identification
    Toyota Camry
    2008-2010
    Toyota FJ Cruiser
    2007-2010
    Toyota Highlander
    2001-2003
    Toyota Highlander
    2004-2007
    Toyota Highlander
    2008-2010
    Toyota Highlander HV
    2006-2010
    Toyota Land Cruiser
    1998-2007
    Toyota Land Cruiser
    2008-2010
    Toyota MR2 Spyder
    2000-2005
    Bank Identification
    Toyota RAV4
    2001-2003
    Bank Identification
    Toyota RAV4
    2006-2010
    Toyota Sequoia
    2001-2010
    Toyota Sequoia
    2008-2010
    Toyota Sienna
    1998-2003
    Bank Identification
    Toyota Sienna
    2004-2006
    Toyota Sienna
    2007-2010
    Bank Identification
    Toyota Solara
    1999-2003
    Toyota Solara
    2004-2010
    Toyota Supra
    1993-1998
    Toyota Tacoma
    1995-2004
    Toyota Tacoma
    2005-2010
    Toyota T-100
    1995-1998
    Toyota Tundra
    2000-2004
    Toyota Tundra
    2005-2010
    Toyota Tundra
    2010
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification
    Toyota Engine Bank 1 and Bank 2 A/F and O2 Identification