Join Now
International Automotive Technicians Network

P0430 Diagnostic Trouble Code Discussion for June 2008

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
2000 Infiniti I30 3.0L MIL Lamp on VIN: JNKCA31A2Y
P0430: Catalyst Efficiency Below Normal (Bank 2). Open to any and all ideas. Direct question concerning the knock sensor - will the ECM create a problem in the absence of the knock sensor input? (According to Alldata the knock sensor DTC will not illuminate the MIL). Car otherwise starts and runs fine.
June 25, 2008
1999 Mercury Cougar 2.5L MIL Lamp on VIN: 1ZWFT61L1X
P0430: cat efficiency. Hi guys I have a problem I never ran into and I'm hoping someone has. This vehicle has both bank 1 and bank 2 cat efficiency codes (po420&430). The post cat o2's are switching fast like a bad cat. My problem is there is a tsb for a reflash. So my question ...
June 30, 2008
2000 Infiniti I30 3.0L MIL Lamp on VIN: JNKCA31A2Y
P0430: Catalyst Efficiency Below Normal (Bank 2). Open to any and all ideas. Direct question concerning the knock sensor - will the ECM create a problem in the absence of the knock sensor input? (According to Alldata the knock sensor DTC will not illuminate the MIL). Car otherwise starts and runs fine.
June 25, 2008
1999 Mercury Cougar 2.5L MIL Lamp on VIN: 1ZWFT61L1X
P0430: cat efficiency. Hi guys I have a problem I never ran into and I'm hoping someone has. This vehicle has both bank 1 and bank 2 cat efficiency codes (po420&430). The post cat o2's are switching fast like a bad cat. My problem is there is a tsb for a reflash. So my question ...
June 30, 2008