{"vehicle":{"id":"2010_mazda_mazda5","year":2010,"make":"Mazda","model":"Mazda5"},"code":"P0139","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":1,"bulletins":[{"nhtsa_id":10097702,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-04-21","date":"2013-08-22","document_id":"01-025-13-2822","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","summary":"SOME VEHICLES MAY EXPERIENCE THE MIL ON WITH DTC P0139 (HO2S CIRCUIT MALFUNCTION) STORED IN PCM MEMORY. THE PCM:1.MONITORS FOR A TIME-OUT MALFUNCTION (WHEN HO2S REMAINS ABOVE 0.2V FOR LONGER THAN A SPECIFIED PERIOD OF TIME DURING FUEL CUT CONTROL).2.MEASURES THE AMOUNT OF TIME FROM WHEN CONDITIONS ARE MET UNTIL HO2S OUTPUT VOLTAGE DROPS BELOW 0.2V.3.DETERMINES A HO2S TIMEOUT MALFUNCTION WHEN THE DETECTED TIME IS MORE THAN 4 SECONDS FOR 2 OF 3 TIMES.THIS MAY BE CAUSED BY CARBON FORMING INSIDE THE ELECTRIC THROTTLE BODY (ETB) WHICH:1.REDUCES THE AIR INTAKE AMOUNT DURING DECELERATION (WITH FUEL CUT).2.ALLOWS FUEL TO REMAIN AROUND THE HO2S.3.CAUSES DETECTION OF P0139 (HO2S TIME-OUT FAIL).","document":null,"url":"https://open.wenmarpro.com/bulletins/10097702"}],"url":"https://open.wenmarpro.com/makes/mazda/mazda5/2010/bulletins?code=P0139"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/mazda/mazda5/2010/codes/P0139","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}