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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System (Diagnostics) (P000A To P015B) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0038 A/F/O2 Heater Control Circuit High Bank 1 Sensor 2 >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different variant/trim than selected.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Output voltage ≤ Battery voltage x 0.2 V

Time needed for diagnosis:  2560 ms

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

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