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Home >> Subaru >> 2007 >> B9 Tribeca Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) >> Enable Conditions
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Enable Conditions

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
A/F sub feedback control condition Completed
Deceleration fuel cut time is 5 seconds or more. Experienced
After fuel cut ≥ 2 sec.
Current calculation time of the rear oxygen sensor heater ≥ 40 sec.
Current continuation time of the rear oxygen sensor heater ≥ 20 sec.
Estimated temperature in the catalytic layer ≥ 400°C (752°F)


ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
A/F main feedback control condition Completed
5 seconds or more deceleration fuel cut. Experienced
After fuel cut ≥ 2 sec.