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2002
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Blazer 4D Utility, 4WD, Part Time
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Repair and Diagnosis
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External Pages
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Different car
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Section 425 (Engine Controls - Self-Diagnostics)
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Diagnostic Tests
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DTC P0030: Ho2S Heater Control Circuit (Sensor 1)
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Conditions For Running DTC
Conditions For Running DTC
WARNING:
This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
System voltage is between 9-18 volts.
The ignition is ON.