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Home >> Oldsmobile >> 2003 >> Bravada AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.2L >> Diagnostic Tests >> DTC P0140: Ho2S Circuit - Insufficient Activity (Bank 1; Sensor 2) >> Test Description

Test Description

The number below refers to the step number in the diagnostic procedures.

  1. 2 -  An HO2S heater fault may set this DTC.
  2. 3 -  If voltage is varying greater than and less than the specified value, the condition is not present.

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