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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P0140: Ho2S Circuit - Insufficient Activity (Bank 1, Sensor 2) >> Test Description

Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 2 -  If the voltage is varying above and below the specified value, the condition is not present.