Question

The P0420 code came on is it hard and/or expensive to fix on my 2007 Hyundai Sant Fe 2.7L?

Answer 1

HI there,

This code is for the bank 1 catalytic converter working below threshold. They can be expensive to repair, typically I tell folks to clear the code and try getting gas at a different location. Sometimes the fuel additives will set off the code.

Answer 2

P0420 HYUNDAI Code - Warm Up Catalyst Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_hyundai.html