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Check engine light came on, code P0057

Tiny
DCKGRD
  • MEMBER
  • 2007 TOYOTA CAMRY
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 169,000 MILES
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?
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Monday, July 1st, 2019 AT 9:30 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 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
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Tuesday, July 2nd, 2019 AT 8:09 PM

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