Check engine light came on, code P0057

2007 TOYOTA CAMRY

169,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC

DCKGRD

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check engine light came on, code P0057, downstream b2 s2. removed sensor and replaced with a OEM part and reset lights. after about 25 - 35 miles lights came back on, same code.

compared both sensors (old and new) and they were identical.

what else could be causing the codes?

Jul 1, 2019 at 9:30 PM

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JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 POSTS

Welcome to 2CarPros.

The condition you have is related to a voltage issue. The first thing I suggest is having the battery load tested to confirm that isn't an issue. If the battery is good, I attached a few pics below which contain a flow chart of checks related to the code. It will require some electrical testing. Here are a few links to help:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Let me know if that helps or if you have other questions.

Take care,
Joe

Images (Click to enlarge)

Jul 2, 2019 at 8:09 PM