DS19

UnclassifiedCooling

What This Code Means

Overcrank (O/C) condition detected; Overcrank diagnostic LED (DS1) illuminated; External fault indicator lamp (DS19) illuminated; Low Oil Pressure (LOP) condition detected; Low Oil Pressure diagnostic LED (DS2) illuminated; High Engine Temperature (HET) condition detected; High Engine Temperature diagnostic LED (DS3) illuminated

Possible Causes

  • •Low oil pressure switch feeds fault signal back to the monitor board via terminal block TB11
  • •High engine temperature switch feeds fault signal back to the monitor board via terminal block TB11

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Get a diagnosis walkthrough for DS19 on your specific Onan unit — cited to the OEM manual, not a forum guess.

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