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Home >> Subaru >> 2019 >> Ascent Touring >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (1 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0141: O2 Sensor Heater Circuit Bank 1 Sensor 2 >> Diagnostic Method
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Diagnostic Method

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
Rear oxygen sensor heater current Less than value of Map

Map 

BATTERY VOLTAGE SPECIFICATION

Battery voltage (V) 10.9 12 13 14 15 16
Threshold value (mA) 330 358 385 413 440 468

Time needed for diagnosis:  10 s

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