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Home >> Subaru >> 2023 >> Outback Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2.5L) (Diagnostics) (1 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P013B: O2 Sensor Slow Response - Lean To Rich Bank 1 Sensor 2 >> Diagnostic Method
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Diagnostic Method

Detect a malfunction by measuring the rear oxygen sensor response time after fuel cut.

G16344950Courtesy of SUBARU OF AMERICA, INC.
(A) 0.55 V
(B) 0.5 V
(C) 0.3 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 SPECIFICATION

Malfunction Criteria Threshold Value
Output voltage value of rear oxygen sensor Less than 0.5V
Elapsed time More than 3000 ms

Time needed for diagnosis:  Less than 1 s

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