Another P0430 code question.
10-08-2018, 12:31 PM
#1
3rd Gear Member
Thread Starter
Join Date: Mar 2008
Location: Texas
Posts: 552
Another P0430 code question.
This is the first time my check engine light has ever come on and the first time I've ever pulled a code off my '08 GT. I searched the forums and most, if not all the posts about the P0430 "catalyst system efficiency below threshold bank 2" error were involved with modified exhausts. But what if you'r mostly stock? I've been using the same tune for a few years, and the only related mod I have to the EMS is the C&L cai that I have (been on there for 8+ years). Could this actually be a bad catalytic converter? Any advise would be appreciated.
10-08-2018, 12:48 PM
#2
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Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,327
Below efficiency is it's not getting hot enough to do its job. IT could be the tune,
but in most cases it's the Cats.
Causes:
Faulty Three-way Catalyst Converter Bank 2
Exhaust Tube
Intake Air Leaks
Faulty Oxygen (O2) Sensor
Faulty Fuel injector(s)
Leaking Fuel Injector (s)
Faulty Spark plugs
Improper Ignition Timing
Faulty Engine Control Module (ECM)
Dirty Air Filter
Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases
the catalytic convert needs to be replaced to fix the problem. If the P0430 code
is combined with other codes, try fixing the other codes first.
but in most cases it's the Cats.
Causes:
Faulty Three-way Catalyst Converter Bank 2
Exhaust Tube
Intake Air Leaks
Faulty Oxygen (O2) Sensor
Faulty Fuel injector(s)
Leaking Fuel Injector (s)
Faulty Spark plugs
Improper Ignition Timing
Faulty Engine Control Module (ECM)
Dirty Air Filter
Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases
the catalytic convert needs to be replaced to fix the problem. If the P0430 code
is combined with other codes, try fixing the other codes first.
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