List Of Self-Diagnostic And Fail-Safe Actions; List Of Diagnostic Codes - Yamaha YZ450FX 2019 Owner's Service Manual

LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS

EAM20156
LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
EAM30365

LIST OF DIAGNOSTIC CODES

Fault code
Crankshaft position sensor: no normal signals are received from the crank-
12
shaft position sensor.
13 Intake air pressure sensor: open or short circuit detected.
Intake air pressure sensor: hose system malfunction (clogged or detached
14
hose).
15 Throttle position sensor: open or short circuit detected.
16 Throttle position sensor: stuck throttle position sensor is detected.
21 Coolant temperature sensor: open or short circuit detected.
22 Intake air temperature sensor: open or short circuit detected.
30 The vehicle has overturned.
Ignition coil: open or short circuit detected in the primary lead of the ignition
33
coil.
39 Injector: open or short circuit detected.
41 ECU: built-in lean angle sensor malfunction.
43 Fuel system voltage: incorrect voltage supplied to the main relay.
EEPROM fault code number: an error is detected while reading or writing on
44
EEPROM.
46 Vehicle system power supply: normal voltage is not supplied to the ECU.
50 ECU: faulty ECU memory.
70 Engine forcibly stops when the vehicle is left idling for a long period of time.
Item
9-4
Page
8-28
8-29
8-31
8-32
8-33
8-34
8-36
8-37
8-38
8-40
8-41
8-41
8-43
8-44
8-45
8-45