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Chevrolet
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2003
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Tracker 2D Utility, 4WD, Standard
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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 - 2.0L
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Diagnostic Tests
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DTC P0420: Catalyst System Low Efficiency
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Conditions For Setting DTC
Conditions For Setting DTC
The high and low voltage swing of the HO2S 2 is similar to the high and low voltage swing of the HO2S 1.
Conditions present for 96 seconds.