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Home >> Acura >> 2001 >> 3.2CL Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0420: Catalyst System - Efficiency Below Threshold >> Notes
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DTC P0420: Catalyst System - Efficiency Below Threshold: Notes

NOTE: Trouble shoot DTC P0137, P0138 or P0141, if set, before proceeding.
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