{"nhtsa_id":10248399,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-06","date":"2023-12-18","document_id":"M1619","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"SERVICE BULLETIN M1619: DIAGNOSTIC TROUBLE CODE (DTC) U04438F AND U04318F. Purpose: This bulletin informs dealers that the current software version for the Left Hand Control Module (LHCM) and Right Hand Control Module (RHCM) have Diagnostic Trouble Codes (DTCs) U04438F (reported by the LHCM) and U04318F (reported by the RHCM), that are being set-off intermittently, shortly after a starting event and then seen as historic DTCs but there are no actual faults or operational concerns with the vehicle. In these cases where these codes are being found as historic, no further troubleshooting or hardware replacement should take place to resolve these historic DTCs. This will be addressed in a future software release. NOTE: If DTCs U04438F or U04318F are found to be CURRENT, follow troubleshooting steps in the Electrical Diagnostic Manual (EDM). Current affected software levels: • LHCM: 0.33.02 • RHCM: 0.37.02.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248399-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248399-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248399","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["U0431","U0443"],"topics":[],"vehicles":[{"make":"HARLEY-DAVIDSON","model":"RA1250","year_from":2021,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"HARLEY-DAVIDSON","model":"RA1250S","year_from":2021,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"HARLEY-DAVIDSON","model":"RH1250S","year_from":2021,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"HARLEY-DAVIDSON","model":"RH975S","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]}],"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":[]}