{"nhtsa_id":11031637,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-28","date":"2026-04-24","document_id":"SSM 54774","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Some 2024-2026 Explorer/Aviator/Police Interceptor Utility vehicles may exhibit an illuminated malfunction indicator (MIL) lamp with engine over-temperature warning in the message center and poor air conditioning (A/C) performance from the engine cooling fan not running. Diagnostic trouble codes (DTC) B3A1B, P0113, P0217, and/or P0480 may be stored in the powertrain control module (PCM). This may be due to poor engine compartment ground connections at G105, G107, G111 and/or G122. Refer to the Wiring Diagram (WD) > Grounds Cell 010 > Pages 2, 3, 7 and 8. Prior to any Workshop Manual (WSM) diagnostics, verify all listed grounds are tightened to 62 lb-in (7 Nm) to resolve this condition. If symptoms or DTCs return after all grounds are tightened, follow normal WSM diagnostics.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031637-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031637-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031637","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["B3A1B","P0113","P0217","P0480"],"topics":[],"vehicles":[{"make":"FORD","model":"EXPLORER","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_ford_explorer","2025_ford_explorer","2026_ford_explorer"]},{"make":"LINCOLN","model":"AVIATOR","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_lincoln_aviator","2025_lincoln_aviator","2026_lincoln_aviator"]}],"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":[]}