Failing downstream O2 sensors but no code- help

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08-12-19, 11:29 AM

bd3471

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Failing downstream O2 sensors but no code- help

Anyone have experience with Techstream? Both my downstream O2 sensors failed a couple tests but not bad enough to throw a code and triggering CEL. Do i NEED to replace them?

Last edited by RA40; 08-15-19 at 09:38 AM.

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