Mazda TSB #01-027-13-2836a
2012 Mazda CX-9
Affected Component: ELECTRICAL SYSTEM:WIRING
- 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 elimi-nate this concern, separate the A/F sensor signal lines from the emission harness by installing the short cord service part detailed in this bulletin.