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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Control System Self-Diagnostics - 5.7L) >> 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 2002 Pontiac Firebird and 2002 Chevrolet Camaro. 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. 2

    This step determines if the fault is present. This test may take 5 minutes for the diagnostic to run.

  2. 3

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

  3. 4

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

  4. 5

    This step tests whether a good ground circuit is available.

  5. 6

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

  6. 7

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

  7. 8

    Certain RTV silicone gasket materials release vapors that can contaminate the HO2S. Silicone in the fuel can also cause silicone contamination. If the sensors appear contaminated by silicone, and if all the silicone sealant is a non-silicone base, advise the customer to try a different fuel company. A missing fuel filler restrictor indicates that the customer may have used leaded fuel.

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