Subaru Crosstrek Service Manual: Dtc p0141 o2 sensor heater circuit bank 1 sensor 2
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0141 O2 SENSOR HEATER CIRCUIT BANK 1 SENSOR 2
Refer to DTC P0037 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0037 A/F / O2 HEATER CONTROL CIRCUIT LOW BANK 1 SENSOR 2">
1. OUTLINE OF DIAGNOSIS
Detect malfunction of the rear oxygen sensor heater.
Judge as NG if it is determined that the rear oxygen sensor impedance is large by observing the engine conditions.
2. COMPONENT DESCRIPTION
(1) | Element cover (outer) | (3) | Sensor element | (5) | Sensor housing |
(2) | Element cover (inner) | (4) | Ceramic heater |
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 10.9 V |
Elapsed time after starting the engine | ≥ 1000 ms |
A/F sensor element impedance | ≤ 82 ? |
A/F sensor heater control duty | ≤ 75 % |
Rear oxygen sensor heater control duty | < 70 % |
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after 1000 ms or more have passed since the engine started.
5. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
Measured secondary oxygen sensor heater control voltage | 12 V battery system voltage ? 0.88 V |
Time needed for diagnosis: 4 ms ? 2500 times
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Dtc p013f o2 sensor delayed response - lean to rich bank 1 sensor 2
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Dtc p014c a/f / o2 sensor slow response - rich to lean bank 1 sensor 1
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P014C A/F / O2 SENSOR SLOW RESPONSE - RICH TO LEAN BANK 1 SENSOR 1DTC DETECTING CONDITION:Detected when two c ...
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Specification
VEHICLE DYNAMICS CONTROL (VDC) > VDC Sequence ControlSPECIFICATION1. CONDITIONS FOR COMPLETION OF VDC SEQUENCE CONTROLWhen the following conditions develop, the VDC sequence control stops and VDC operation is returned to the normal control mode.• When the speed of at least one wheel reaches ...
When checking or servicing in the engine compartment
CAUTION
Do not contact the drive belt
cover while checking the components
in the engine compartment.
Doing so may cause your
hand to slip off the cover and
result in an unexpected injury.
Do not touch the oil filter until the engine has cooled down
completely.
Doing so m ...
Daylight saving time setting
1. Perform the preparation steps according
to "Preparation for date setting" 3-
56.
2. Operate the "
" or "
"
switch to
select the "Daylight Saving Time" item.
Then push the
button.
3. The current setting will be displayed.
Push the
button to enter the selection ...
