2003 4.7 diagnostic code and converter question...
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Amateur
Joined: Jul 2012
Posts: 31
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2003 4.7 diagnostic code and converter question...
I threw a P0420 code earlier this year and had our local exhaust shop put on a new converter. Problem solved.
Today, CEL illuminates with another P0420 but I am in business attire.
Question: Does the '03 4.7 have one converter or two? Could it possibly be a downstream O2 sensor?
Today, CEL illuminates with another P0420 but I am in business attire.
Question: Does the '03 4.7 have one converter or two? Could it possibly be a downstream O2 sensor?
Veteran
Joined: Dec 2006
Posts: 295
Likes: 5
From: Wheatley Ontario, Canada.
My 03 has 1 converter. It's possible the rear o2 sensor is the cause. Without proper diagnosis that is just a guess. Check the link here. Check out what they say about after market converters.
http://www.obd-codes.com/p0420
http://www.obd-codes.com/p0420