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Home >> Pontiac >> 2000 >> Firebird Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P0420: Catalyst System Low Efficiency - Bank 1 >> Notes

DTC P0420: Catalyst System Low Efficiency - Bank 1: Notes

NOTE: For circuit reference, see WIRING DIAGRAMS article.

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