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Is there a link between the engine swap and code PO430?

Tiny
S&L
  • MEMBER
  • 2008 JEEP LIBERTY
  • 145,000 MILES
Hey, I saw the answers on that topic, but I am still unsure of the possible causes.
For context, I just had my engine replaced a month ago at a car dealership. Since I got it back, the car hasn’t performed as well as it was before, and the engine light came on. Code P0430 shows on the scanner.
So, is there a link between the engine swap and the P0430 code? Could that be easily fixed?
Thank you for helping.
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Tuesday, August 1st, 2023 AT 11:42 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Hi,

It is unlikely that the new engine would have caused this to happen. The code is for a bank 2 catalytic converter.

By chance, do you know if they replaced things like spark plugs or other things when the new engine was installed? I attached a pic below that indicates in descending order the most common repairs for this code.

Let me know. Also, let me know if that is the only code, and when you say it doesn't run as well as it did before, let me know what is happening.

Take care,

Joe

See pic below.
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Tuesday, August 1st, 2023 AT 8:11 PM

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