Kohler ECV940 Service Manual page 51

Fault Code MIL Blinks
Code P0174 1/10/8/13
Component: Fuel System
Fault: Lean fuel condition
Condition: Fuel inlet screen/fi lter plugged, low
pressure at high pressure fuel line, TPS
malfunction, shorted connection or faulty
sensor.
Conclusion: TPS Auto-Learn Incorrect
● Lean condition (check oxygen sensor
signal with VOA and see Oxygen
Sensor).
Engine Wiring Harness Related
● Pin circuit wiring or connectors.
ECU pin Black 10, 12, 16 and 17.
Low Fuel Pressure
● Plugged fi lters.
● Bad lift pump.
● Vapor lock.
Oxygen Sensor Related
● Sensor connector or wiring problem.
● Exhaust leak.
● Poor ground.
● Contaminated sensor.
Poor system ground from ECU to engine,
causing rich running while indicating lean.
Fuel pump module connection. See Fuel
Components.
Fault Code MIL Blinks
Code P0201 10/2/8/11
Component: Fuel Injector
Fault: Injector 1 Circuit Malfunction
Condition: Injector damaged or faulty, shorted or
open connection.
Conclusion: Injector Related
● Injector coil shorted or opened.
Engine Wiring Harness Related
● Broken or shorted wire in harness.
ECU pin Black 5.
● Wiring from Ignition.
ECU Related
● Circuit controlling injector #1 damaged.
62 690 05 Rev. H
EFI SYSTEM-ELECTRONIC THROTTLE BODY (ETB)
SPN FMI
4237 31
SPN FMI
651 31
KohlerEngines.com
Fault Code MIL Blinks
Code P0202 10/2/8/11
Component: Fuel Injector
Fault: Injector 2 Circuit Malfunction
Condition: Injector damaged or faulty, shorted or
open connection.
Conclusion: Injector Related
● Injector coil shorted or opened.
Engine Wiring Harness Related
● Broken or shorted wire in harness.
ECU pin Black 6.
● Wiring from Ignition.
ECU Related
● Circuit controlling injector #2 damaged.
Fault Code MIL Blinks
Code P0217 10/10/6/14
Component: Engine Overheat Warning
Fault: Overheat
Condition: Engine operating at or above
recommended temperature limit.
Conclusion: Throttle opening is limited, value varies
by engine model.
● Ramps in and out of limit.
Provides an alert to operator of a
condition that may cause damage to
engine.
● Typically this is remedied by clearing
debris blocking engine cooling air fl ow.
SPN FMI
652 31
SPN FMI
110 0
51