How do I fix code P0420?

How do I fix code P0420?

What repairs can fix the P0420 code?

  1. Replace muffler or repair leaks in the muffler.
  2. Replace exhaust manifold or repair leaks in the exhaust manifold.
  3. Replace exhaust pipe or repair exhaust pipe leaks.
  4. Replace catalytic converter (most common)
  5. Replace engine coolant temperature sensor.
  6. Replace front or rear oxygen sensor.

Can a bad o2 sensor cause a P0420 code?

You May Need an Oxygen Sensor Or You May Need Something Else Entirely. When check engine lights are scanned, a p0420 code is a very common result.

Is it OK to drive with code P0420?

Yeah driving on a p0420 won’t hurt anything. Your gas milage might be slightly affected by the computer. But no actual damage will occur.

Do I need to fix P0420?

While P0420 does not pose a danger to the driver, it can cause driveability concerns such as a lack of power or poor acceleration if left unrepaired. It is recommended that you address P0420 as soon as possible to keep the cost of the repair to a minimum.

Is it safe to drive with P0420 code?

What causes the P0420 trouble code on a Santa Fe?

There are many things that can cause the P0420 trouble code in your Santa Fe. Here are the most common ones. Oxygen Sensor – The P0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings. When the oxygen sensor is bad, it can cause a false reading and trigger the code.

What to do if your Hyundai engine light says P0420?

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 P0420 code is combined with other codes, try fixing the other codes first. The cost of diagnosing the P0420 HYUNDAI code is 1.0 hour of labor.

What is the trouble code on a Hyundai Santa Fe?

P0420 is a very common trouble code. This code number references a number that is given to you when you plug your Hyundai Santa Fe into a OBDII scanner. It doesn’t matter which model you have, this OBDII code has the same meaning for all of them (1996+)

What does the catalytic converter code P0420 mean?

The function of the catalytic converter is to break down harmful pollutants that are created by your Hyundai during the combustion cycle and convert them into harmless gases. Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore increasing the output of harmful pollutants by your Hyundai.