Logo

CID 191 CAT Fault Code

Transmission Output Speed Sensor

Cause :

The battery supplies electricity to the TCM even when the ignition switch is off. This power allows the TCM to store data such as DTC history and freeze frame data.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.


Don't forget ! When a fault code pops up, CAT's Uptime Center is automatically notified via an cellular link, and it alerts the truck's owner by prearranged methods, usually email or phone calls.

About | Contact | Privacy

Copyright © 2019 All rights reserved. Cat OBD,EDC,DTC and Engine Trouble codes informations.

CatFaultCodes.com is not a part of Cat brand. CAT is a trademark that we trust.