FORD

SSM 49050

2020-08-06 · NHTSA 10179316

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Some 2018-2020 F-150 vehicles equipped with a 5.0L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0171, P0172, P0174 and/or P0175. This may be due to incorrect flex fuel learning, which is often caused by customer refueling habits when adding only small amounts of fuel, the vehicle mislearning of inferred ethanol fuel mixture (FF_INF value) or a component concern. Refer to pinpoint test H in the Powertrain Control/Emissions Diagnosis (PC/ED) Manual for diagnostics and Flex Fuel GSB for additional flex fuel system information and diagnostic tips.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.