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Home >> Acura >> 2002 >> 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

DTC P0420: Catalyst System Efficiency Below Threshold: Notes

NOTE: If DTCs P0137, P0138 or P0141 are set, troubleshoot these codes before proceeding.

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