Onan Generator Fault Codes

124 documented Onan fault codes — causes, diagnosis and repair steps for each, drawn from OEM service literature.

Air Intake

00-0AR00-0AV00-0AP

Cooling

OVERSPEED LAMP00 - 0AS00 - 0AHHET6100 − 0AZ145151DS248LOW OIL PRESSURE LAMPDS19F2OVERCRANK LAMP43LOW ENGINE TEMPERATURELOP00 - 0AN14638HIGH ENGINE TEMPERATURE LAMP415LET22FAULT CODE 1FAULT CODE 2F1OVERSPEEDO.S.00-014O.C.HIGH ENGINE TEMPERATURE2300 - 010121147257DS300 - 0AD00 - 02200-0AI400-0484415800-0CF200-0CV00 - 015LOW OIL PRESSURE4500 − 0CMFAULT CODE 42400-0AUOVERCRANK00-047DS1

Electrical

00-0AB1442352927131214463644232141513171300-0AG1200-0AM

Emissions

00 − 04600-0AA11

Fuel

00-04100-0AC

General

00-042SDC BAR 00 − 0AG4100-04537SDC BAR 00-033SDC BAR 00 − 0AD42SDC BAR 00 − 0423SDC BAR 00-0ACF600-0BT

Lubrication

00-0557CODE NO. 217

Speed

23412100-02800-03300-021OCFAULT CODE 700-0AQ00-04000-037252335SDC BAR 00-02735900-0242600-03100-04446

Starting

00-0BB00-02600-02700-0BA

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