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P0430 Diagnostic Trouble Code Discussion for July 2006

Catalyst System Low Efficiency (Bank 2)

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Trouble Ticket Help Requests for DTC P0430
Help Request Posted
2001 GMC Yukon XL 1500 SLT 5.3L MIL Lamp on VIN: 3GKFK16T41
P0430: Catalyst System Low Efficiency (Bank 2). good morning, problem is this denali i have here , was here 2 days ago with 2 codes as you see in related history , customer had originally brought truck last week complaining of hard starts, and c.e.l. flashing then about a minute after everything would retur...
July 27, 2006