Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p013b o2 sensor slow response - lean to rich bank 1 sensor 2

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p013b o2 sensor slow 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 slow response of lean > rich for rear oxygen sensor output.

After the deceleration fuel cut has occurred, detect the trouble by calculating the time when the rear oxygen sensor output passes through the predetermined range of 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)	Rich
(D)	Lean	(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
Front oxygen (A/F) sensor closed loop control	Operation
((Fuel system status	= Fuel cut
for time)	≥ 5000 ms
followed by fuel system status)	≠ Fuel cut

4. GENERAL DRIVING CYCLE

Perform diagnosis only once after recovering from a deceleration fuel cut continued for more than predetermined time.

5. DIAGNOSTIC METHOD

Detect the trouble by calculating the response time of the rear oxygen sensor after fuel cut.

(A)	0.55 V	(B)	0.50 V	(C)	0.30 V
(D)	0.25 V	(E)	0 V	(F)	Diagnostic parameter
(G)	Normal	(H)	Malfunction

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria	Threshold Value
Time when rear oxygen sensor voltage changed from 0.3 V to 0.5 V	> 4000 ms

Time Needed for Diagnosis: 4000 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

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 21. OUTLINE OF DIAGNOSI ...

Dtc p013a o2 sensor slow response - rich to lean bank 1 sensor 2

DTC DETECTING CONDITION:Detected when two consecutive driving cycles with fault occur.CAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and I ...

Other materials:

Installation
CAUTION:• If the airbag has been activated, replace the front sub sensor with a new part.• Do not reuse the bolt and nut.Always replace with the specified new bolts and nuts.• When installing the sensor, insert the set pin on the backside of the sensor into the hole on the body sid ...