Join Now
International Automotive Technicians Network

P0430 Diagnostic Trouble Code Discussion for June 2009

Catalyst System Low Efficiency (Bank 2)


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0430
Help Request Posted
2003 Chevrolet Suburban 1500 LS 5.3L No Start VIN: 3GNFK16Z63
P0430: Catalyst System Low Efficiency (Bank 2). I have this 2003 chev. suburban with a 5.3l, this truck will not start unless you wait 3 to 5 seconds for the fuel pump to build pressure, if you wait longer then that the pressure drops to 0 in almost 30 sec. Also if you go to start the truck right away befor...
June 25, 2009
2003 Chevrolet Suburban 1500 LS 5.3L No Start VIN: 3GNFK16Z63
P0430: Catalyst System Low Efficiency (Bank 2). I have this 2003 chev. suburban with a 5.3l, this truck will not start unless you wait 3 to 5 seconds for the fuel pump to build pressure, if you wait longer then that the pressure drops to 0 in almost 30 sec. Also if you go to start the truck right away befor...
June 25, 2009