SOFTWARE GP-MONITOR 5214639 - Caterpillar

Electronic Engines can perform a self-diagnostics test. When the system detects an active problem, a diagnostic lamp is activated. Diagnostic codes will be stored in permanent memory in the Electronic Control Module (ECM). The diagnostic codes can be retrieved by using Caterpillar electronic service tools.Some installations have electronic displays that provide direct readouts of the engine diagnostic codes. Refer to the manual that is provided by the OEM for more information on retrieving engine diagnostic codes.Active codes represent problems that currently exist. These problems should be investigated first.Logged codes represent the following items:
Intermittent problems
Recorded events
Performance historyA maximum of 6 codes can be stored at one time.If 6 codes are already present, then the engine will still react to another fault, but the fault will not be logged by the ECM.The problems may have been repaired since the logging of the code. These codes do not indicate that a repair is needed. The codes are guides or signals when a situation exists. Codes may be helpful to troubleshoot problems.When the problems have been corrected, the corresponding logged fault codes should be cleared.