Mazda TSB #01-013-18-3478
2012 Mazda CX-9
Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- Some vehicles may exhibit the check engine light on with DTC P0456 stored in the PCM memory. P0456: EVAP system leak detected (very small leak)The concern is most likely the result of the customer not getting the fuel cap completely closed after fuelingthe vehicle. This causes a small fuel vapor leak and turns DTC P0456 on.