Onan generator · 4 model lines
Onan generator code 22: Governor Actuator Overload
Onan documentation for 4 model lines lists 22 as “Governor Actuator Overload”.
Check your model first. The same code can mean different things on different models. Find the model number on the appliance's data label, then use the matching row below.
What code 22 means by model
What you can safely check
- Reduce connected loads, especially air conditioners and battery chargers.
- Check only exterior exhaust blockage and air-filter condition if the manual allows owner access and the generator is off.
- Record whether the fault clears with fewer loads.
Stop and call a technician for
- Internal generator electrical, fuel, engine, sensor, controller, and output-voltage diagnosis belongs to Cummins service or a qualified generator technician.
- Electrical output, inverter, controller, stator, rotor, fuel injection, sensors, wiring, coolant-system service, fuel leaks, and generator compartment repairs belong to Cummins service or a qualified generator technician.
Generators can produce carbon monoxide, hot surfaces, fuel hazards, moving-part hazards, and lethal voltage. Shut the generator down and do not open energized compartments unless qualified.
Write this down before you call
- generator model/spec letter
- hour meter
- fault blink count
- loads running when the shutdown occurred
Other codes on Cummins Onan QG gasoline generators (HGJAA, HGJAB, HGJBB)
Full table: Cummins Onan QG gasoline generators (HGJAA, HGJAB, HGJBB)
- 2 Low Oil Pressure
- 3 Service Check
- 4 Over Crank
- 12 Over Voltage
- 13 Under Voltage
- 14 Over Frequency
- 15 Under Frequency
- 19 Governor Actuator
- 23 Low Oil Pressure Cutoff Switch
- 27 Voltage Sense
- 29 High Battery Voltage
- 31 Over Speed
- 32 Low Cranking Speed
- 35 Control Card Failure
- 36 Engine Stopped
- 37 Invalid Generator Set Configuration
- 38 Over Current (Field Overload)
- 41 Generator Rotor
- 42 Processor
- 43 Processor
- 45 Speed Sense
- 47 Ignition
- 48 Generator Field Sense
- 51 Processor
- 52 Fuel Injector
- 54 MAT Sender
- 56 MAP Sender
- 57 Over Prime
- 58 Exhaust Gas Temperature Shutdown
- 81 Exhaust Gas Temperature Sensor Open
- 82 Exhaust Gas Temperature Sensor Shorted
Other codes on Cummins Onan Quiet Diesel 5000-12500 generators
Full table: Cummins Onan Quiet Diesel 5000-12500 generators
- 1 Engine Over Temperature
- 2 Low Oil Pressure
- 3 Service Check
- 4 Over Crank
- 12 Over Voltage
- 13 Under Voltage
- 14 Over Frequency
- 15 Under Frequency
- 19 Governor Actuator
- 24 Temperature Sender
- 27 Voltage Sense
- 29 High Battery Voltage
- 32 Low Cranking Speed
- 35 Control Card Failure
- 36 Engine Stopped
- 38 Over Current (Field Overload)
- 41 Generator Rotor
- 42 Processor
- 43 Processor
- 45 Speed Sense
- 48 Generator Field Sense
- 57 Over Prime
Related troubleshooting guides
Official sources
OnanCummins Onan RV Generator ManualsOnanCummins Onan Generator Set for RV Operator Manual A035D009OnanCummins Onan RV Generator Set HGJAA/HGJAB/HGJAC Spec A-E Operator Manual 983-0101OnanCummins Onan Quiet Diesel 10000/12500 HDKCA/HDKCB Operator Manual A043D713OnanCummins Onan Quiet Diesel 5000 HDKBA Operator Manual 0981-0166OnanCummins Onan Quiet Diesel 6000/7500/8000 HDKAH/HDKAJ/HDKAK Operator Manual A046L053