p0420 code after cleaning throttle body.. HELP
Senior Member
Joined: Sep 2008
Posts: 6,126
From: SE Michigan
This section is for "forum help", help on using the forum. Not help me my HUMMER has a problem posts.
The cleaning of the TB and your code is probably a coincidence.
P0420 is a catalytic converter code. Either you have a bad sensor/s or you have a bad cat.
You did not state what year, mileage and engine so we don't know how many sensors you have or where They are located.
The cleaning of the TB and your code is probably a coincidence.
P0420 is a catalytic converter code. Either you have a bad sensor/s or you have a bad cat.
You did not state what year, mileage and engine so we don't know how many sensors you have or where They are located.
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Junior Member
Joined: Dec 2015
Posts: 6
This section is for "forum help", help on using the forum. Not help me my HUMMER has a problem posts.
The cleaning of the TB and your code is probably a coincidence.
P0420 is a catalytic converter code. Either you have a bad sensor/s or you have a bad cat.
You did not state what year, mileage and engine so we don't know how many sensors you have or where They are located.
The cleaning of the TB and your code is probably a coincidence.
P0420 is a catalytic converter code. Either you have a bad sensor/s or you have a bad cat.
You did not state what year, mileage and engine so we don't know how many sensors you have or where They are located.
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