# Lexus SC300 O2 Sensor Identification

**URL:** <https://community.cartalk.com/t/lexus-sc300-o2-sensor-identification/59141>\
**Category:** Maintenance/Repairs\
**Tags:** sensors, lexus, sc, 300\
**Created:** [December 25, 2010, 6:37pm UTC](https://community.cartalk.com/t/lexus-sc300-o2-sensor-identification/59141 "2010-12-25T18:37:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jlt423](https://avatars.discourse-cdn.com/v4/letter/j/c5a1d2/32.png) [@jlt423](https://community.cartalk.com/u/jlt423)\
**Post date:** [December 25, 2010, 6:37pm UTC](https://community.cartalk.com/t/lexus-sc300-o2-sensor-identification/59141/1 "2010-12-25T18:37:57Z")

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I can’t find docs to id the location of the O2 sensors. I know where they are but I can’t identify what is Bank 1 (forward?). If bank 1 is beside the first firing piston I need to identify it (can’t find docs for that one either). This is a SC300 6cyl produced in Aug of 1996, but called a 1997.

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**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\
**Post date:** [December 25, 2010, 11:34pm UTC](https://community.cartalk.com/t/lexus-sc300-o2-sensor-identification/59141/2 "2010-12-25T23:34:23Z")

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You have an inline 6 cyl. there is only 1 bank of cylinders. A V-6 has 2 banks. Starting at the cylinder head you have bank 1 sensor 1 then further along the exhaust, bank 1 sensor 2 and possibly a 3rd one.