Cat 3406e flash code 55. it will flash a two digit number. Nov 26, 2020 · Diagnostic Codes Diagnostic codes alert the operator that a problem in the electronic system has been detected. The sequence of flashes represents the system diagnostic message. cout the flashes. . Feb 5, 2009 · With the ignition on, turn the cruise control off and hold the set switch in untill the check engine light starts to flash. Begin by inspecting the injector harness and connectors for damage or corrosion. This downloadable troubleshooting manual contains code and symptom-based troubleshooting/diagnostic information for Caterpillar 3406E, C10, C12, C15, C16, C18 on-highway truck diesel engines. The software can be used by the service technician in order to view the Flash Code (FC) - The flash codes are proprietary Caterpillar code numbers that are flashed on the diagnostic lamp. Code 55 on a C15 3406E indicates an injector malfunction, often due to wiring faults or injector failure. ljadh bnolx emisgv ympddt ras wphywrhd xqk ivua zstrm sbnsd