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Chevrolet
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2002
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Impala Base, 3.4 E
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Self-Diagnostics - 3.4L
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Diagnostic Tests
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DTC P0134: Ho2S Circuit Insufficient Activity
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Conditions For Setting DTC
Conditions For Setting DTC
HO2S 1 signal voltage remains between 350-550 mV for more than 30 seconds.