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Cadillac
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2002
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Seville STS
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Repair and Diagnosis
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Engine Performance
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Engine Control System - Self-Diagnostics - 4.6L
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Diagnostic Tests
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DTC P0030: Ho2S Heater Control Circuit Sensor 1
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Conditions for Setting DTC
Conditions for Setting DTC
The PCM detects an incorrect circuit condition in the high side driver for HO2S bank 1 sensor 1.