{"nhtsa_id":11030223,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-25","date":"2026-03-19","document_id":"09-006-26","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Blocked Make-Up Air (MUA) Solenoid Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P051B-00 - Crankcase Pressure Sensor Circuit Range/performance. This bulletin involves replacing the clean air duct assembly.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030223-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030223-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030223","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P051B"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2026,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"RAM","model":"1500","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_ram_1500"]}],"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":[]}