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Pontiac
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2003
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Vibe Base, 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
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Diagnostic Tests
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DTC P0140: Ho2S 2 Circuit Insufficient Activity (Bank 1)
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Conditions For Setting DTC
Conditions For Setting DTC
HO2S 2 signal voltage remains between 408-512 mV for more than 90 seconds.
There is a Throttle Position (TP) sensor angle change of more than 8 percent, at least twice during test period.