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Service bulletins for the 2016 Mazda Mazda6

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.

670 on file from NHTSA, as of 2026-10-19.

About P0137 on the 2016 Mazda Mazda6: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0137 are shown. Show all

Bulletins, newest first
SA2882017-03-01. Service bulletin. ELECTRICAL SYSTEM. IF YOU ENCOUNTER A VEHICLE WITH DTC P0137 (CIRCUIT LOW INPUT), CHECK THE REAR HARNESS AT THE RED CIRCLED AREA IN THE FOLLOWING DIAGRAM. IF AN AFTERMARKET ALARM SYSTEM IS INSTALLED, THE REAR HARNESS MIGHT HAVE RECEIVED DAMAGE FROM ELECTRO-TAP CONNECTORS (A) OR TO THE PROTECTOR TUBE (B). THIS DAMAGE IS NOT COVERED UNDER WARRANTY.
1011M2017-02-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. SOME CUSTOMERS MAY COMPLAIN ABOUT A CHECK ENGINE LIGHT ON WITH DTC P0137 (HO2S CIRCUIT LOW INPUT) STORED IN PCM MEMORY. THIS MAY BE CAUSED BY REAR HARNESS DAMAGE FROM AN AFTERMARKET ALARM SYSTEM INSTALLATION.
SA2882016-12-17. Service bulletin. ELECTRICAL SYSTEM. IF YOU ENCOUNTER A VEHICLE WITH DTC P0137 (CIRCUIT LOW INPUT), CHECK THE REAR HARNESS AT THE RED CIRCLED AREA IN THE FOLLOWING DIAGRAM. IF AN AFTERMARKET ALARM SYSTEM IS INSTALLED, THE REAR HARNESS MIGHT HAVE RECEIVED DAMAGE FROM ELECTRO-TAP CONNECTORS (A) OR TO THE PROTECTOR TUBE (B). THIS DAMAGE IS NOT COVERED UNDER WARRANTY.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.