Service bulletins for the 2010 Mazda Mazda5
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.
219 on file from NHTSA, as of 2026-10-19.
About P0139 on the 2010 Mazda Mazda5: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P0139 are shown. Show all
| 01-025-13-2822 | 2017-04-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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). |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.