{"nhtsa_id":10003441,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-10-21","date":"2003-07-31","document_id":"2515","mfr_campaign":null,"replaces":"2515","component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"THE DIAGNOSIS OF FRONT AND REAR OXYGEN SENSORS CAN PROVE DIFFICULT SINCE THE OPERATION OF THE REAR SENSOR CAN INFLUENCE THE OPERATION OF THE FRONT SENSOR. THE SENSORS SHARE COMMON SOURCES OF POTENTIAL FAULTS BUT ALSO HAVE UNIQUE FAULT SOURCES THAT MAY TRIGGER DIAGNOSTIC TROUBLE CODE (DTC) ENGINE CONTROL MODULE (ECM) 28 OR 29. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003441","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLVO","model":"S40","year_from":2001,"year_to":2003,"match":"exact","vehicle_ids":["2001_volvo_s40","2002_volvo_s40","2003_volvo_s40"]},{"make":"VOLVO","model":"V40","year_from":2001,"year_to":2003,"match":"exact","vehicle_ids":["2001_volvo_v40","2002_volvo_v40","2003_volvo_v40"]}],"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":[]}