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Oldsmobile
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2003
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Bravada AWD
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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 - 4.2L
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Diagnostic Tests
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DTC P1133: Ho2S Circuit - Insufficient Switching (Sensor 1)
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Conditions For Setting DTC
Conditions For Setting DTC
The HO2S 1 rich to lean counts is less than 2 or lean to rich counts is less than 2.