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Possible Cause
NHEC0433
I Heated oxygen sensor 1 (front)
I Heated oxygen sensor 1 heater (front)
I Fuel pressure
I Injectors
I Intake air leaks
DTC Confirmation Procedure
NHEC0098
CAUTION:
Always drive vehicle at a safe speed.
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.
TESTING CONDITION:
I Always perform at a temperature above −10°C (14°F).
I Before performing following procedure, confirm that bat-
tery voltage is more than 11V at idle.
SEF649Y
SEF650Y
SEF651Y
WITH CONSULT-II
NHEC0098S01
1) Start engine and warm it up to normal operating temperature.
2) Stop engine and wait at least 10 seconds.
3) Turn ignition switch “ON” and select “HO2S1 (B1) P0131” or
“HO2S1 (B2) P0151” of “HO2S1” in “DTC WORK SUPPORT”
mode with CONSULT-II.
4) Touch “START”.
5) Start engine and let it idle for at least 3 minutes.
NOTE:
Never raise engine speed above 3,600 rpm after this step. If
the engine speed limit is exceeded, return to step 5.
6) When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until “TESTING” changes to “COMPLETED”. (It
will take approximately 50 seconds or more.)
ENG SPEED 1,200 - 2,600 rpm
Vehicle speed 80 - 100 km/h (50 - 62 MPH)
B/FUEL SCHDL 3 - 9 msec
Selector lever Suitable position
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
7) Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. If “NG” is displayed, refer to “Diagnostic
Procedure”, EC-204.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0131 (BANK 1), P0151 (BANK 2) HO2S1 (FRONT) (LEAN SHIFT
MONITORING)
Possible Cause
EC-203
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