51
UnclassifiedGeneral
What This Code Means
Injector #1 is not functioning; Engine will run very poorly with only one cylinder functioning
Possible Causes
- •Bad fuel pump relay (primary side functional but pin 30 to pin 87 remains open, or primary side pin 85 to pin 86 open/shorted during engine operation)
- •Broken or shorted wire in harness (ECU pin 14 to injector pin 2, ECU pin 28 to fuel pump relay pin 86, Fuel pump relay pin 87 to injector pin 1)
- •Circuit controlling fuel pump relay damaged
- •Circuit controlling injector #1 damaged
- •Injector coil shorted or opened
- •Open main fuse F1
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 51 on your specific KOHLER CO. unit — cited to the OEM manual, not a forum guess.
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