Yamaha MT-09 2021 - Page 490

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
P0133 O
2
sensor: re-
sponse delay
• Defective O
2
sen-
sor.
• Malfunction in fuel
system.
• Malfunction in ex-
haust system.
Increased exhaust
emissions.
—
P0134 O
2
sensor: signal
stuck
• Defective engine
condition.
• Improperly in-
stalled O
2
sensor.
• Incorrect fuel pres-
sure.
• Defective O
2
sen-
sor.
• Malfunction in
ECU.
Increased exhaust
emissions.
QSS is not carried
out.
Cruise control sys-
tem cannot be oper-
ated. (for
MTN890D)
P0201
P0202
P0203
[P0201] Injector #1:
malfunction in injec-
tor #1.
[P0202] Injector #2:
malfunction in injec-
tor #2.
[P0203] Injector #3:
malfunction in injec-
tor #3.
• Defective coupler
between injector
and ECU.
• Open or short cir-
cuit in wire har-
ness between
injector and ECU.
• Defective injector.
• Malfunction in
ECU.
• Improperly in-
stalled injector.
Loss of engine pow-
er.
Engine is difficult to
start.
Engine cannot be
started.
Engine stops.
Engine idling speed
is unstable.
Increased exhaust
emissions.
O
2
feedback is not
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
QSS is not carried
out.
Cruise control sys-
tem cannot be oper-
ated. (for
MTN890D)
P0300 Misfire in multiple
cylinders
• Ignition system
malfunction/abnor-
mal
• Fuel system mal-
function/abnormal
Engine is difficult to
start.
Loss of engine pow-
er.
Engine idling speed
is unstable.
Engine response is
poor.
Increased exhaust
emissions.
—
P0301 Misfire in cylinder #1 • Ignition system
malfunction/abnor-
mal
• Fuel system mal-
function/abnormal
Engine is difficult to
start.
Loss of engine pow-
er.
Engine idling speed
is unstable.
Engine response is
poor.
Increased exhaust
emissions.
—
DTC Item
Probable cause of
malfunction
Vehicle symptom
Fail-safe system
operation