Service engine on codes P0170 P0171 P0174

Asked by GuruM9SV May 16, 2017 at 04:34 PM about the 1999 Ford Taurus SE

Question type: Maintenance & Repair

Service engine on codes P0172 and,P0174?

4 Answers
70,965

Kelly answered 7 years ago

hi ..i would check for a vacuum leak and add a bottle of ZMAX fuel treatment to 1/3 tank of gas...drive it a few days..and recheck codes... > P0170 Fuel Trim Malfunction (Bank 1) P0171 System too Lean (Bank 1) P0174 System too Lean (Bank 2) good luck, kelly Read more at: https://www.obd-codes.com/p01-codes Copyright OBD-Codes.com

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70,965

Kelly answered 7 years ago

here the deal > http://www.easterncatalytic.com/education/tech- tips/fuel-trim-can-be-a-valuable-diagnostic-tool/

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Kelly answered 7 years ago

if no help / fixed then > http://www.aa1car.com/library/ford_lean_codes.htm

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