Q: Check Engine Light P0430

asked by on

I just bought this car a few days ago from a used car finance place. They have done some work to it before I bought it. I took the car to a mechanic and he found that there was a nut missing and another loose nut on the rear exhaust manifold. A few day later my check engine light came on. A p0430 code came up ( that was the only one) now my question is can the fact that the nuts are missing and another one is loose cause the check engine light to come on and also be the reason for that p0430 code? Please help I need a little peace of mind

My car has 135442 miles.
My car has an automatic transmission.

Hi there. There may be two possibilities here for the P0430 code. The fact that the new bolts were installed can cause the computer to read differently so it may just need to adapt and reset. It is also possible that the seller removed these to allow for a small exhaust leak which could have helped it to pass emissions. At this point the oxygen sensor readings need to be checked to know for sure as it may need a catalytic converter. If you need to have this looked at by another technician, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the code and advise you on any actions needed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Check Engine Light P0430

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine rattle 2001 Hyundai SantaFe

Hi - engine rattle on startup is a common problem with this engine. The hydraulic valve lifters, actuated by engine oil pressure, drain down overnight, and it requires a few seconds for the oil pump to fully fill the "oil...

Q: Constant Stalling with something rattling and shifts extremely hard.

From your explanation it seems a great deal of damage may have been done. The force that cracked the oil pan must have damaged or knocked something else loose. First check all vehicle fluids to make sure they are full...

Q: Engine code P0430 and losing oil

Diagnostic Trouble Code P0430 means that the ECU is detecting below threshold performance from the catalytic converter. The ECU monitors the catalytic converter closely and when a low performance threshold is detected the Check Engine Light will be displayed on...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.