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Saturn
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2003
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Ion 1 Standard
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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
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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 ECM detects that the HO2S 1 parameter is 391-491 mV for 100 seconds.