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Cadillac
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2005
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XLR
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls (DTC P0341 To P0629)
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DTC P0420 or P0430
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DTC Descriptors
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P0420 Catalyst System Low Efficiency Bank 1
DTC P0430 Catalyst System Low Efficiency Bank 2