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CID 1938 CAT Fault Code

Auxiliary Hydraulic Boost Flow Diverter Relay

Cause :

This sub type is used for control module Internal Failures that cannot be assigned to a specific sub type.Engine started, engine running, and the PCM detected a high voltage present at the PCM for 3 minutes after the engine started. The Starter Relay Control Circuit High Voltage test monitors the voltage signal that is sent from the ignition switch.


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.

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