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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 258 (Engine Controls Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P1133: Ho2S Insufficient Switching (Bank 1; Sensor 1) >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. 2 -  When system is operating correctly the O2S voltage should toggle above and below the specified values.
  2. 5 -  Specified value is what is measured on a correctly operating system.
  3. 6 -  Specified value is what is measured on a correctly operating system.
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