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1997 towncar 4.6 ford

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what is po171 po174 codes for 1997 lincoln town car

Vehicle: 1997 lincoln towncar 4.6 engine

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P0171 Fuel trim lean Bank 1

P0174 Fuel trim lean Bank 2

These codes are lean code condition where there is more air to fuel ratio.Some of the common cause for a lean code are vacuum hoses broken or disconnected,

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