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Pontiac
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2003
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Sunfire Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls Self-Diagnostics - 2.2L
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Diagnostic Tests
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DTC P0134: Ho2S Circuit Insufficient Activity - Sensor 1
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Conditions For Setting DTC
Conditions For Setting DTC
The PCM detects that the HO2S 1 parameter is 400-500 mV for 125 seconds.