FAULT CODE 2
UnclassifiedCooling
What This Code Means
Overcrank; Loss of Raw Water Flow; Excess White Smoke at Start-Up (Warm); Excess White Smoke at Start-Up (Cold); High Engine Temperature; Low Oil Pressure; Engine oil leak; High engine temperature; Low oil pressure
Possible Causes
- •Broken or loose wires
- •Grounded or shorted S6 switch leads
- •Engine compression issues
- •Choke operation issues
- •Coolant level issues
- •Grounded or shorted sender lead
- •Temperature sender resistance issues
- •Coolant temperature issues
- •Raw water flow issues
- •Raw water impeller issues
- •Heat exchange blockage
- •Pressure cap issues
- •Oil level issues
- •Broken or loose sender lead
- •Pressure sender open
- •Grounded or shorted gauge lead
- •Sender to control fault
- •Restricted raw water flow
- •Damaged raw water impeller
- •Heat exchanger blockage
Suggested Actions
- 1Check battery voltage
- 2Check fuel supply
- 3Check governor actuator operation
- 4Verify control plugs are fully seated
- 5Verify field sense and quad leads are fully seated in connector to control
- 6Check AC output
- 7Check field voltage
- 8Check for broken or loose wires
- 9Check field windings
- 10Check proper field resistance reading (open to ground)
- 11Check brush condition and contact
- 12Check proper quadrature resistance reading (open to ground and main windings)
- 13Check cylinder compression
- 14Check raw water supply
- 15Check raw water flow
- 16Check for grounded or shorted S6 switch leads
- 17Check engine compression
- 18Check choke operation
- 19Check coolant level
- 20Check for grounded or shorted sender lead
Related Onan Fault Codes
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