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Subaru Crosstrek Service Manual: Dtc p013f o2 sensor delayed response - lean to rich bank 1 sensor 2

Subaru Crosstrek Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / 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 2

NOTE:

For the diagnostic procedure, refer to DTC P013A. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P013A O2 SENSOR SLOW RESPONSE - RICH TO LEAN BANK 1 SENSOR 2">

1. OUTLINE OF DIAGNOSIS

Detect the delayed response of rear oxygen sensor output for lean > rich.

After the deceleration fuel cut has completed, detect the trouble by calculating the time when the rear oxygen sensor output increases to the predetermined voltages.

Judge as NG when the response time is larger than the threshold value.

2. COMPONENT DESCRIPTION

(A)

Electromotive force

(B)

Air fuel ratio

(C)

Lean

(D)

Rich

(E)

Theoretical air fuel ratio

(F)

Comparative voltage

(1)

Atmosphere

(2)

Exhaust gas

(3)

Electromotive force

3. EXECUTION CONDITION

Secondary parameters

Execution condition

Battery voltage

≥ 10.9 V

Main feedback

In operation

Rear oxygen sensor voltage when fuel cut ends

≤ 0.15 V

(Duration of fuel cut

≥ 5 s

Fuel shut-off function from above)

Not in operation

Rear oxygen sensor estimated element temperature when fuel cut ends

≥ 500 °C (932 °F)

Amount of intake air

≥ 10 g/s

4. GENERAL DRIVING CYCLE

Perform diagnosis only once when recovering from the deceleration fuel cut continued for more than predetermined time with the rear oxygen sensor warmed up sufficiently.

5. DIAGNOSTIC METHOD

Detect the trouble by calculating the time from the completion of the fuel cut to the beginning of the rear oxygen sensor voltage starting to rise.

(A)

0.3 V

(B)

0 V

(C)

Diagnostic parameter

(D)

Normal

(E)

Malfunction

Judge as NG when the following conditions are established.

Judgment value

Malfunction Criteria

Threshold Value

Rear oxygen sensor output voltage value

< 0.2 V

Time needed for diagnosis: Value of Map

Map

(CVT model)

Amount of intake air

g/s (oz/s)

10 (0.35)

12 (0.42)

18 (0.63)

32 (1.13)

Duration of time

(s)

7.5

6.0

4.5

3.5

(MT model)

Amount of intake air

g/s (oz/s)

10 (0.35)

12 (0.42)

14 (0.49)

22 (0.78)

Duration of time

(s)

8.5

6.5

5

3.5

Elapsed time: The time since the λ became less than 1 after the end of fuel cut

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

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