Nissan March K13. Manual - part 238
P0134 HO2S1
EC-413
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
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P0134 HO2S1
DTC Logic
INFOID:0000000005886527
DTC DETECTION LOGIC
Under the condition in which the heated oxygen sensor 1 signal is
not input, the ECM circuits will read a continuous approx. 0.3 V.
Therefore, for this diagnosis, the time that output voltage is within
200 to 400 mV range is monitored, and the diagnosis checks that
this time is not inordinately long.
DTC CONFIRMATION PROCEDURE
1.
INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
PRECONDITIONING
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:
Always perform at a temperature above -10
°
C (14
°
F).
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
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) P0134” of “HO2S1” in “DTC WORK SUPPORT” mode
with CONSULT-III.
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 displayed on the CONSULT-III screen. Maintain
the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take approximately 40 to
50 seconds.)
CAUTION:
Always drive vehicle at a safe speed.
SEF237U
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0134
Heated oxygen sensor 1
circuit no activity detected
The voltage from the sensor is constantly
approx. 0.3 V.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Heated oxygen sensor 1