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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 375 (Engine Controls Self-Diagnostics) >> Diagnostic Tests >> DTC P0133 & P0153: Ho2S Circuit - Slow Response - Bank 1 & 2, Sensor 1 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3

    When DTCs P0133 and P0153 are set at the same time, fuel contamination is likely.

  2. 4

    An exhaust leak 6-12" (152-304 mm) away from the HO2S can cause a DTC to set.

  3. 6

    This step tests the integrity of the HO2S high signal circuit to the PCM.

  4. 7

    This step tests the integrity of the HO2S high signal circuit to the PCM.

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