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P0422 Diagnostic Trouble Code Discussion for July 2004

Catalyst Efficiency Below Normal (Bank 1)

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Trouble Ticket Help Requests for DTC P0422
Help Request Posted
2000 Hyundai Accent GL 1.5L Stall, MIL Lamp on, no accell VIN: KMHCG45G0Y
P0422: Catalyst Efficiency Below Normal (Bank 1). Hello fellow techs ,may need hyundai, tech.The best way to descrbe run problem is the vehicle basically runs ok with the exception that the engine cannot exceed 3000 rpms.This problem is always there whether in the bay in park or cruising down the road pushing...
July 31, 2004