CAT Fault Codes | Caterpillar Engine Errors And Trouble Codes

Cat Diagnostic codes are used by the electronic system in order to alert the operator that a problem exists. A diagnostic code also indicates the nature of the problem for you, and you can see what is the code meaning with CatFaultCodes.com service.

Cat DTC :

Cat diagnostic code information that follows is utilized by Caterpillar machines that are equipped with Caterpillar electronic controls.Component identifiers, failure mode identifiers, and module identifiers are pieces of information that assist service personnel in diagnosing system problems of the machine.

CAT Engine

A component identifier (CID) is a diagnostic code that informs the service personnel of the specific circuit or system within which a problem was detected.CAT CID Code List

A failure mode identifier (FMI) is a diagnostic code that informs the service personnel of the type of problem that has been detected within a circuit or system.CAT FMI Code List

A module identifier (MID) is a diagnostic code that identifies the electronic control module that has diagnosed a fault.CAT MID Code List

Common CAT Construction Machines Faults :

Fault Codes For CAT Heavy Machines


Cat Articulated Fault Codes

Asphalt Paver

Cat Asphalt Paver Fault Codes

Backhole Loader

Cat Backhole Loader Fault Codes

Cold Planer

Cat Cold Planer Fault Codes

Compact Track And Multi Terrain Loader

Cat Compact Track And Multi Terrain Loader Fault Codes


Cat Compactor Fault Codes


Cat Dozer Fault Codes


Cat Dragline Fault Codes


Cat Drill Fault Codes

Electric Rope Shovel

Cat Electric Rope Shovel Fault Codes


Cat Excavator Fault Codes

Hydraulic Mining Shovel

Cat Hydraulic Mining Shovel Fault Codes

Material Handler

Cat Material Handler Fault Codes

Motor Grader

Cat Motor Grader Fault Codes

Off Highway Truck

Cat Off Highway Truck Fault Codes

Pipe Layer

Cat Pipe Layer Fault Codes

Road Reclaimer

Cat Road Reclaimer Fault Codes

Skid Steer Loader

Cat Skid Steer Loader Fault Codes


Cat Telehandler Fault Codes

Truck Loader

Cat Truck Loader Fault Codes

Underground Hard Rock

Cat Underground Hard Rock Fault Codes

Underground Longwall

Cat Underground Longwall Fault Codes

Wheel Dozer

Cat Wheel Dozer Fault Codes

Wheel Excavator

Cat Wheel Excavator Fault Codes

Wheel Loader

Cat Wheel Loader Fault Codes

Wheel Tractor Scraper

Cat Wheel Tractor Scraper Fault Codes

How to check CAT machine&engine code ?

In most cases it is not necessary to stop the engine because of an intermittent code. However, we recommend that the operator retrieve the code(s) and refer to the chart in order to identify the nature of the event. The operator should note or document the circumstances (low power, vehicle/engine speed limits, excessive smoke, etc) involved during the time the lamp was ON. Documentation may be useful for future reference, and in order to help troubleshoot the situation.

The YELLOW lamp will flash to indicate a two digit flash code and the SET/RESUME switch may be released. The sequence of flashes represents the system diagnostic message. Count the first sequence of flashes in order to determine the first digit of the diagnostic code. After a two second pause, the second sequence of flashes will identify the second digit of the diagnostic code.

NOTE:Catfaultcodes.com indicates the potential effect on engine performance with ACTIVE fault codes.

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