KTM 390 DUKE 2021 Owner's Manual page 226

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21 TROUBLESHOOTING
Faults
Engine overheats
Malfunction indicator lamp
lights up yellow
Engine dies during the trip
The ABS warning lamp lights
up
High oil consumption
Headlight and position light are
not functioning
224
Possible cause
Thermostat defective
Fuse 5 blown
Defect in radiator fan system
Malfunction in the electronic
fuel injection
Lack of fuel
Fuse 1, 3, 4, or 7 is blown
ABS fuse blown
Large difference in wheel
speeds of the front and rear
wheels
Malfunction in ABS
Engine vent hose bent
Engine oil level too high
Engine oil too thin (low viscos-
ity)
Fuse 6 blown
Action
Check the thermostat.
Change the fuses of individual power
consumers. (
p. 183)
Check the radiator fan system.
Read out the fault memory using the
KTM diagnostics tool.
Refuel. (
p. 106)
Change the fuses of individual power
consumers. (
p. 183)
Change the ABS fuses. (
Stop the vehicle, switch off the igni-
tion, and start it again.
Read out the fault memory using the
KTM diagnostics tool.
Route the vent hose without bends or
change it if necessary.
Check the engine oil level. (
Change the engine oil and the oil filter,
clean the oil screens.
(
Change the fuses of individual power
consumers. (
p. 183)
p. 180)
p. 208)
p. 209)

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