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International Automotive Technicians Network
Re: '96 Ford F-150- MIL on and KOEO & KOER code P0000
Posted to Technical Theory Forum on 3/21/2000 5 Replies

Hi Mike,

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Just had one of these last month, same year, same DTC (PO171). Turned out to be a defective O2 that needed to be warm and driven quite a bit before it would fail. Once it failed, STFT went ... Login to read more.

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