{"vehicle":{"id":"2021_ram_4500","year":2021,"make":"Ram","model":"4500"},"code":"P203F","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":10221186,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2021-04-02","document_id":"1803421","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL","summary":"P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid (DEF) issue in extreme cold weather. Diagnostic Trouble Codes (DTCs) P203E - Reductant Level Sensor 1 Circuit Intermittent and/or P203F - Reductant Level Too Low set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221186-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221186-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221186"},{"nhtsa_id":10204384,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-10","document_id":"18-034-21 REV. A","mfr_campaign":null,"component":"FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION; FUEL SYSTEM, DIESEL","summary":"P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid (DEF) issue in extreme cold weather. Diagnostic Trouble Codes (DTCs) P203E - Reductant Level Sensor 1 Circuit Intermittent and/or P203F - Reductant Level Too Low set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204384-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204384-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204384"},{"nhtsa_id":10194039,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-24","date":"2021-04-02","document_id":"18-034-21","mfr_campaign":null,"component":"BACK OVER PREVENTION; FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE","summary":"P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid (DEF) issue in extreme cold weather. Diagnostic Trouble Codes (DTCs) P203E - Reductant Level Sensor 1 Circuit Intermittent and/or P203F - Reductant Level Too Low set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194039-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194039-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10194039"}],"url":"https://open.wenmarpro.com/makes/ram/4500/2021/bulletins?code=P203F"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/ram/4500/2021/codes/P203F","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}