Short term fuel trim

[Captain Jase]

Been looking for the cause of short term fuel trim OBD code. During wintering I discovered the flame arrestor was hanging loose. Could this cause the air inflow readings to be off and trigger the fuel trim code? Code 902-5

 

[dingbat]

Could this cause the air inflow readings to be off and trigger the fuel trim code? Code 902-5

No…fuel delivery (filter, injectors, fuel pressure, etc.) or O2 sensor