00 - 0AS
UnclassifiedCooling
What This Code Means
Battery Not Charging; Coolant Loss (External); Engine Cranks But Will Not Start (Genset)
Possible Causes
- •Faulty circuit breaker
- •Loose or damaged wiring connections
- •Loss of continuity of transformer
- •Faulty DC regulator
- •Low coolant level
- •Cracked or leaking hoses
- •Loose hose clamps
- •Radiator leaks
- •Coolant in oil
- •Low fuel level
- •Air in fuel system
- •Air filter restriction
- •Blown glow plug fuse
- •Faulty connections at glow plug bus
- •Incorrect resistance of each glow plug
- •Faulty fuel pump
- •Incorrect B+ at glow plugs
Suggested Actions
- 1Check circuit breaker
- 2Check wiring connections
- 3Check continuity of transformer
- 4Check DC regulator
- 5Check coolant level
- 6Check for cracked or leaking hoses
- 7Check for loose hose clamps
- 8Check radiator for leaks
- 9Check for coolant in oil
- 10Pressure test coolant system
- 11Run generator set and check for leaks
- 12Check fuel level
- 13Prime fuel system
- 14Check for air in fuel system
- 15Check air filter restriction
- 16Check glow plug fuse
- 17Check connections at glow plug bus
- 18Check resistance of each glow plug
- 19Check fuel pump
- 20Check B+ at glow plugs
Related Onan Fault Codes
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