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Pontiac
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2003
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Aztek AWD
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Repair and Diagnosis
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Engine Controls Self-Diagnostics
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Diagnostic Tests
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DTC P0134: Ho2S Circuit - Insufficient Activity (Bank 1; Sensor 1)
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Conditions For Setting DTC
Conditions For Setting DTC
PCM detects that the HO2S 1 signal voltage remains between 382-525 mV for more than 30 seconds.