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Check engine code p0420,p0432 2001 4.0
 
 
Black widow Black widow is offline
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Join Date: Mar 2012
Location: Riverside,Wa
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03-17-2012, 11:46 PM
 
Wanting to know if I'll be needing to replace the two cats below exhaust manifold?

Last edited by Black widow; 03-17-2012 at 11:52 PM..
 
 
 
 
OhioYJ OhioYJ is offline
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03-18-2012, 01:09 AM
 
While that's a possibility it could also the O2 sensors, or it could he a fluke. I would reset it and.wait and see if those codes come back. If the liht stays off don't worry about it, if it comes back on then its time to investigate further.
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03-18-2012, 03:04 AM
 
Already replaced all 4 02 sensors,light went out for a little while,but came back on.Milage has went down since last fall.
 
 
 
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