{"nhtsa_id":10179316,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-04","date":"2020-08-06","document_id":"SSM 49050","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179316-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179316-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10179316","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0171","P0172","P0174","P0175"],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2018,"year_to":2020,"match":"exact","vehicle_ids":["2018_ford_f-150","2019_ford_f-150","2020_ford_f-150"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}