What is code P170? on 1996 Toyota T100

I just bought a 1996 with 215,000 miles and the check engine light turned on. Auto parts store gave me code 170, and I'm wondering if others have experience with this and have recommendations?

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2 answers 1 comment
that code is not in all data recheck and post
you probably mean...PO170
yes he does and thats not in all data as stated