Yamaha MT-09 2021 - Page 485

9-55
SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
P0106 Intake air pressure
sensor 1: clogging
of hose or sensor
disconnection
• Intake air pressure
sensor 1 hose is
not installed.
• Intake air pressure
sensor 1 hose is
not installed cor-
rectly (Detached,
clogged, kinked or
pinching).
• Intake air pressure
sensor 1 hole is
clogged, or intake
air pressure sen-
sor 1 is not in-
stalled correctly.
Engine idling speed
is high.
Engine idling speed
is unstable.
Engine response is
poor.
Loss of engine pow-
er.
Increased exhaust
emissions.
Intake air pressure
is fixed to 101.3
[kPa].
Intake air pressure
difference is fixed to
0 [kPa].
α–N is fixed.
Fuel is not cut off
due to the intake air
pressure difference.
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)
P0107
P0108
[P0107] Intake air
pressure sensor 1:
ground short circuit
detected.
[P0108] Intake air
pressure sensor 1:
open or power short
circuit detected.
[P0107] Low voltage
of the intake air
pressure sensor 1
circuit (0.5 V or less)
[P0108] High volt-
age of the intake air
pressure sensor 1
circuit (4.8 V or
more)
• Defective coupler
between intake air
pressure sensor 1
and ECU.
• Open or short cir-
cuit in wire har-
ness between
intake air pressure
sensor 1 and ECU.
• Defective intake
air pressure sen-
sor 1.
• Malfunction in
ECU.
Engine idling speed
is unstable.
Engine response is
poor.
Loss of engine pow-
er.
Increased exhaust
emissions.
Intake air pressure
is fixed to 101.3
[kPa].
Intake air pressure
difference is fixed to
0 [kPa].
α–N is fixed.
Fuel is not cut off
due to the intake air
pressure difference.
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)
DTC Item
Probable cause of
malfunction
Vehicle symptom
Fail-safe system
operation