Controls - 26 SK1050 Operator’s Manual Graphic Display Item Description Notes 5. Diagnostic message indicator c00ic102w.eps c00ic103w.eps Appears when there is a diagnostic trouble code. This indicates a warning code. This indicates a stop code. Go to Diagnostics menu to see the active and stored error messages. 6. Glow plug indicator Lights when ignition switch is on and engine ECU determines glow plugs are required to start machine. 7. DPF regeneration indicator c00ic104w.eps Flashes if regeneration is needed but has not occurred yet. Lights solid while regeneration is occurring.