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mazda tribute 2002 readin code p0430

Customer Question
mazda tribute 2002 readin code p0430
Submitted: 6 years ago.Category: Car
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Answered in 5 minutes by:
6/4/2011
Auto Mechanic: Dan, Technician replied 6 years ago
Dan
Dan, Technician
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Satisfied Customers: 24,990
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Welcome to JustAnswer, my name is XXXXX XXXXX I'm here to help get your problem resolved. Ask follow up questions, thanks.

 

This code means the catalytic converter needs to be replaced.

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Customer reply replied 6 years ago
I just had it replaced a few weeks ago
Auto Mechanic: Dan, Technician replied 6 years ago

Problem could also be oxygen sensor, air leak such as stuck open pcv valve, leaking hose going to pcv, ect. Onther possible option is a poor aftermarket converter.

 

P0430 Catalyst Efficiency Below Normal (Bank 2)

Possible CausesSetting Conditions
  • Catalytic converter has failed (check for physical damage and discoloration)
  • Check for air leaks in the exhaust manifold and in the exhaust pipes
  • Check for signs of engine oil contamination
  • Front HO2S and/or the rear HO2S is loose in the mounting hole
  • Front HO2S older (aged) than the rear HO2S (HO2S is lazy)
  • Front HO2S has failed (it may be contaminated with fuel or silicone)
  • Rear HO2S has failed (it may be contaminated with fuel or silicone)
  • Spark timing retarded
Engine speed from 1,090-3,090 rpm; calculated engine load from 16-55%, vehicle driven from 16-64 mph for 2-3 minutes, and the PCM detected the Bank 2 catalyst efficiency was less than the acceptable threshold in memory.

This code sets in 2 Trip(s).
This code will turn on the MIL (Malfunction Indicator Lamp)

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Auto Mechanic: Dan, Technician replied 6 years ago
V6 or 4 cyl?
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Customer reply replied 6 years ago

which or where is bank 2 located v6

Auto Mechanic: Dan, Technician replied 6 years ago
Bank 2 is thefront manifold. There is also a resonator in front which you may want to replace if no leaks are found.
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Dan, Technician
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Satisfied Customers: 24,990
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Customer reply replied 6 years ago
can i run a straight pipe so i dont have to buy another after market catalyc converter?
Auto Mechanic: Dan, Technician replied 6 years ago

The check engine light would still be on if you ran a straight pipe.

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Customer reply replied 6 years ago

can i return a catalyc converter or how is it determined if it is faulty?

Auto Mechanic: Dan, Technician replied 6 years ago
It would be hard to determine if faulty other then replacing to see if it helps. I would still start by replacing resonator.
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