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P0430 Diagnostic Trouble Code Discussion for August 2005

Catalyst System Low Efficiency (Bank 2)

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Trouble Ticket Help Requests for DTC P0430
Help Request Posted
1997 Mazda Millenia S 2.3L MIL Lamp on VIN: JM1TA2228V
P0430: Catalyst Efficiency Below Normal (Bank 2). Mazda Techs,(PO420 & PO430) This car takes approx. a week to set the same 2 codes. I have replace the right rear o2 sensor, & the vehicle still sets the same codes @ the same time (cat effiencancy low, left & right banks). I have not scoped O2 sens...
August 02, 2005
1995 Jaguar Vanden Plas 4.0L MIL Lamp on VIN: SAJKX1748S
P0430: Convertor efficiency. Thanks for taking your time to read this post. This XJ6 came in yesterday with no drivability complaint, just a MIL light on and the need for an Ohio E check. Hooked up scan tool and Pulled codes and found po420,430 and po138. Check O2 sensor operation(w/ scan...
August 11, 2005
2000 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA31DXY
P0430: Catalyst Efficiency Below Normal (Bank 2). Got a hard code, p0430. The rear o2 was replace about 20,000 miles ago. Scope patterns on the o2s are great,indicating to me cat is good. Tried to take car to dealer for reflash,was told unable to do reflash, until after cat and rear o2 where replaced due to e...
August 12, 2005