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
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P013F O2 SENSOR DELAYED RESPONSE - LEAN TO RICH BANK 1 SENSOR 2NOTE:For the diagnostic procedure, refer to DT ...
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 ...
Other materials:
Dtc p0517 battery temperature sensor circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0517 BATTERY TEMPERATURE SENSOR CIRCUIT HIGHDTC detecting condition:Immediately at fault recognitionCAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATI ...
Dtc p1499 coil 4 egr "a" control circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P1499 COIL 4 EGR "A" CONTROL CIRCUIT HIGHDTC detecting condition:Immediately at fault recognitionTrouble symptom:• Improper idling• Poor driving performance• Engine breathingCAUTION ...
Dtc c0023 front left abs sensor circuit open or short
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C0023 FRONT LEFT ABS SENSOR CIRCUIT OPEN OR SHORTNOTE:For the diagnostic procedure, refer to “DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT”. Diagnostic Procedure with Dia ...
