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DTC P2297 A/F SENSOR 1
EC-1395
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P2297 A/F SENSOR 1 PFP:226A3
Component Description BBS002LL
Air fuel ratio (A/F) sensor 1(1) is installed on the downstream of Oxi-
dation Catalyst with DPF. A/F sensor 1 measures the oxygen level in
the exhaust gas and converts it into a voltage signal. A/F sensor 1
sends the signal to ECM. Based on the signal from A/F sensor 1
ECM calculates the air fuel mixture ratio. ECM uses the calculated
ratio for the DPF regeneration control.
A heater is integrated in A/F sensor 1 to ensure the required operat-
ing temperature.
CONSULT-II Reference Value in Data Monitor Mode BBS002M9
Specification data are reference values.
On Board Diagnosis Logic BBS002LM
NOTE:
● If DTC P2297 is displayed with DTC P0101, first perform the trouble diagnosis for DTC P0101.
Refer to EC-1086, "
DTC P0101 MAF SENSOR" .
● If DTC P2297 is displayed with DTC P2228 or P2229, first perform the trouble diagnosis for DTC
P2228, P2229. Refer to EC-1393, "
DTC P2228, P2229 BARO SENSOR" .
● If DTC P2297 is displayed with DTC P1268, P1269, P1270, P1271, first perform the trouble diagno-
sis for DTC P1268, P1269, P1270, P1271. Refer to EC-1324, "
DTC P1268 - P1271 FUEL INJECTOR" .
PBIB3183E
MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1
● Engine: After warming up Idle Approx. 2200 [mV]
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P2297
2297
Air fuel ratio (A/F) sensor 1
out of range during deceler-
ation
● The A/F signal computed by ECM from the
air fuel ratio (A/F) sensor 1 signal is less
than 3.7V.
● The A/F signal computed by ECM from the
air fuel ratio (A/F) sensor 1 signal is more
than 4.4V.
● Mass air flow sensor
● Front exhaust gas temperature
sensor
● Rear exhaust gas temperature sen-
sor
● A/F sensor learning value
(The value is out of the specified
range.)
● Exhaust tube is connected incor-
rectly or clogged.
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