Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p013e o2 sensor delayed response - rich to lean bank 1 sensor 2

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p013e o2 sensor delayed response - rich to lean 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 rich > lean.

After the deceleration fuel cut has started, detect the trouble by calculating the time when the rear oxygen sensor output decreases 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
Rear oxygen sensor voltage when fuel cut starts	≥ 0.55 V
Estimated temperature of rear oxygen sensor element when fuel cut starts	≥ 500 °C (932 °F)
Status of fuel system	= Fuel cut

4. GENERAL DRIVING CYCLE

Perform the diagnosis only once when the deceleration fuel cut is activated from a high and constant speed driving.

5. DIAGNOSTIC METHOD

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

(A)	0.5 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
Time when rear oxygen sensor voltage changed to 0.5 V after the fuel cut started	> 4000 ms

Time Needed for Diagnosis: 5000 ms

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

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 21. OUTLINE OF DIAGNOSI ...

Dtc p013b o2 sensor slow response - lean to rich bank 1 sensor 2

Other materials:

Inspection
1. Check that the fuel injector has no deformation, cracks or other damages.2. Measure the resistance between fuel injector terminals.Terminal No.Standard1 and 2Approx. 12.0 - (when 20°C (68°F)) ...