Onan generator · 1 model line
Onan generator code 51: Processor
Onan documentation lists 51 as “Processor”.
What code 51 means by model
| Model line | What the manufacturer says | Source |
|---|---|---|
| HGJAA / HGJAB / HGJAC (QG 5500/7000 EFI) operator manuals | The Cummins Onan operator manual lists Code 51 as Processor. | Cummins Onan RV Generator Manuals Cummins Onan Generator Set for RV Operator Manual A035D009 Cummins Onan RV Generator Set HGJAA/HGJAB/HGJAC Spec A-E Operator Manual 983-0101 |
What you can safely check
- Turn the generator off.
- Record the code for Cummins service.
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.
Generators can produce carbon monoxide, moving-part hazards, fuel 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
- 22 Governor Actuator Overload
- 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
- 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