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.
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
Cat Articulated Fault Codes
Cat Asphalt Paver Fault Codes
Cat Backhole Loader Fault Codes
Cat Cold Planer Fault Codes
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
Cat Electric Rope Shovel Fault Codes
Cat Excavator Fault Codes
Cat Hydraulic Mining Shovel Fault Codes
Cat Material Handler Fault Codes
Cat Motor Grader Fault Codes
Cat Off Highway Truck Fault Codes
Cat Pipe Layer Fault Codes
Cat Road Reclaimer Fault Codes
Cat Skid Steer Loader Fault Codes
Cat Telehandler Fault Codes
Cat Truck Loader Fault Codes
Cat Underground Hard Rock Fault Codes
Cat Underground Longwall Fault Codes
Cat Wheel Dozer Fault Codes
Cat Wheel Excavator Fault Codes
Cat Wheel Loader Fault Codes
Cat Wheel Tractor Scraper Fault Codes
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.