Onan

42

UnclassifiedGeneral

What This Code Means

Invalid Set Configuration; Excessive Smoke Under Load; Invalid set configuration

Possible Causes

  • •Broken or loose wiring connections
  • •Broken wiring connections
  • •Loose wiring connections
  • •Microprocessor ROM error during self-test
  • •Overload Condition

Suggested Actions

  1. 1Check for broken or loose wiring connections
  2. 2Replace the genset control PCB

Related Onan Fault Codes

F6SDC BAR 00 − 0AD41SDC BAR 00 − 0AG37SDC BAR 00 − 0423SDC BAR 00-0AC00-045SDC BAR 00-03300-04200-0BT
Browse all Onan fault codes

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Get a diagnosis walkthrough for 42 on your specific Onan unit — cited to the OEM manual, not a forum guess.

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