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Oldsmobile
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2002
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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 P1221: Excessive Difference Between Throttle Position Sensors
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Conditions For Setting DTC
Conditions For Setting DTC
The difference between the TP sensor 1 and TP sensor 2 exceeds a predetermined value.