FMI 1122 CAT Fault Code

Cause :

This sub type is used for control module Internal Failures that cannot be assigned to a specific sub type.Thhis indicates a malfunction in the intake air flow. The cause of the problem may be a loss of tightness or a malfunction of the mass air flow sensor. If the contaminants are not critical, you can clean the flowmeter using a special carburetor.