Nissan Primera P11. Manual - part 238
On Board Diagnosis Logic
NCEC0106
To judge the malfunction, the output from the heated oxygen sen-
sor 1 (front) is monitored to determine whether the “rich” output is
sufficiently high and whether the “lean” output is sufficiently low.
When both the outputs are shifting to the lean side, the malfunc-
tion will be detected.
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0131
0131
I
The maximum and minimum voltages from the sensor
are not reached to the specified voltages.
I
Heated oxygen sensor 1 (front)
I
Heated oxygen sensor 1 (front) heater
I
Fuel pressure
I
Injectors
I
Intake air leaks
DTC Confirmation Procedure
NCEC0107
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 9 seconds
before conducting the next test.
TESTING CONDITION:
I
Always perform at a temperature above −10°C (14°F).
I
Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
With CONSULT-II
1)
Start engine and warm it up to normal operating temperature.
2)
Stop engine and wait at least 9 seconds.
3)
Turn ignition switch “ON” and select “HO2S1 P0131” of
“HO2S1” in “DTC WORK SUPPORT” mode with CONSULT-II.
4)
Touch “START”.
5)
Start engine and let it idle for at least 3.5 minutes.
NOTE:
Never raise engine speed above 3,200 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 20 seconds or more.)
SEF300U
SEF827Y
SEF828Y
SEF651Y
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING)
SR20DE
On Board Diagnosis Logic
EC-151