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EC-1086
[YD (WITH EURO-OBD)]
DTC P0101 MAF SENSOR
DTC P0101 MAF SENSOR PFP:22680
Component Description BBS001XS
The mass air flow sensor is placed in the stream of intake air. It mea-
sures the intake flow rate by measuring a part of the entire intake
flow. The mass air flow sensor controls the temperature of the hot
wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor Mode BBS001XT
Specification data are reference values.
*: This signal is converted by ECM internally. Thus this differs from ECM terminal voltage.
On Board Diagnosis Logic BBS001XU
PBIB1604E
MONITOR ITEM CONDITION SPECIFICATION
MAS AIR/FL SE*
● Engine: After warming up
● Air conditioner switch: OFF
● Shift lever: Neutral position
● No load
Ignition switch: ON
(Engine stopped)
Approximately 0.4V
Idle 1.3 - 1.6V
Engine is revving from idle to
about 4,000 rpm.
1.3 - 1.6V to Approximately 4.0V
(Check for liner voltage rise in
response to engine being
increased to about 4,000 rpm)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101
Mass air flow sensor cir-
cuit range/performance
Improper voltage from the sensor is sent to
ECM compared with the driving condition.
● Harness or connectors
(The sensor circuit is open or
shorted.)
● Mass air flow sensor
● Intake air leaks
● Air cleaner
● Intake air temperature sensor
● EGR volume control valve
● Turbocharger boost sensor
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