P0420 Code
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Driver School Candidate
Joined: May 2012
Posts: 17
Likes: 0
From: wy
P0420 Code
Hi Everyone,
My exhaust started to make some noise. Couple weeks after that i got a trouble code 0420. I didn't notice any power loss. Can it be just just a crack or a bad gasket in the exhaust system?
Thank You
My exhaust started to make some noise. Couple weeks after that i got a trouble code 0420. I didn't notice any power loss. Can it be just just a crack or a bad gasket in the exhaust system?
Thank You
Driver
Joined: Oct 2013
Posts: 146
Likes: 1
From: GA
Does the RX sound different? any droning especially at fast idle?
The code means the computer isn't seeing enough difference between the precat O2 sensor and the post cat O2 sensor. The way to know for sure is to put it on a scanner and compare the O2 data to the FSM's spec and a visual and auditory inspection of the exhaust.. But the likely culprits are 1)the cat, 2)exhaust leak, 3)one or both O2 sensors.
The code means the computer isn't seeing enough difference between the precat O2 sensor and the post cat O2 sensor. The way to know for sure is to put it on a scanner and compare the O2 data to the FSM's spec and a visual and auditory inspection of the exhaust.. But the likely culprits are 1)the cat, 2)exhaust leak, 3)one or both O2 sensors.
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chi123
IS - 2nd Gen (2006-2013)
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Aug 14, 2012 06:27 AM
