{"nhtsa_id":10172145,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-03-06","date":"2020-02-11","document_id":"20-01-005H(1)","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM","mfr_system":null,"summary":"This bulletin provides information related to an Electronic Control Module (ECM) software update to revise the logic for DTC P0456: EVAP System Leakage Detected Very Small Leak.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172145-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172145-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10172145","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":["P0456"],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_hyundai_sonata"]}],"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":[]}