Mazda CX-9 2011–2015 — technical service bulletin
Bulletin 01-006-15-3039 · NHTSA communication 10099785 · issued Apr 24, 2015
Technical service bulletin
communication type
Equipment
component
2011–2015
model years
5
vehicle entries
Official summary
Some vehicles may experience mil illumination with dtc p219a:00 and/or p219b:00 stored in pcm memory. The dtcs may be caused by abnormal electrical noise within the engine harness of certain vehicles. To eliminate this concern, separate the a/f sensor signal lines from the emission harness by installing the short cord service part detailed in this bulletin.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.