Loading ...
Loading ...
Loading ...
DTC P0131, P0132 A/F SENSOR 1
EC-1125
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0131, P0132 A/F SENSOR 1 PFP:226A3
Component Description BBS002M5
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 BBS002M6
Specification data are reference values.
On Board Diagnosis Logic BBS002JF
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/
F) sensor 1 signal is not inordinately low or high.
DTC Confirmation Procedure BBS002JG
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 2 seconds
4. If 1t trip DTC is displayed, go to EC-1128, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
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
P0131
0131
Air fuel ratio (A/F) sensor 1
circuit low voltage
● An excessively low voltage from the sensor
is sent to ECM.
● Harness or connectors
(The air fuel ratio (A/F) sensor 1 cir-
cuit is shorted.)
● Air fuel ratio (A/F) sensor 1
P0132
0132
Air fuel ratio (A/F) sensor 1
circuit high voltage
● An excessively high voltage from the sensor
is sent to ECM.
SEF817Y
Loading ...
Loading ...
Loading ...