146
UnclassifiedCooling
What This Code Means
Pre - High Coolant Temp - Warning; CIRCUIT BREAKER (AC MAIN) TRIPS; EXCESSIVE EXHAUST SMOKE (BLACK)
Possible Causes
- •Increase in load
- •High ambient temp
- •Loose wire connections
- •Excessive or improper loads
- •Fuel supply issues
- •Intake restriction
- •Excessive loads
Suggested Actions
- 1Refer to PCC1302 troubleshooting guidelines
- 2Review fault code 151 correction list for other possible causes
- 3Evaluate fault codes
- 4Check loads
- 5Check for loose wire connections
- 6Measure voltage
- 7Measure amperage
- 8Measure frequency
- 9Check fuel supply
- 10Check intake restriction
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 146 on your specific Onan unit — cited to the OEM manual, not a forum guess.
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