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Recent questions tagged p0420

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P0700 Dodge - magnum
asked Mar 9, 2017 by
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1 answer 369 views
2002 sentra with 125K on it. CEL is on. p0420 is the code.
asked Feb 27, 2017 by
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1 answer 447 views
bothcodes came up po430,po420
asked Feb 25, 2017 by
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2 answers 1.5k views
2007 Honda Accord LX AT 2.4L with engine code P0420
asked Feb 22, 2017 by
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code p0420
asked Feb 22, 2017 by
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I have a 2002dodge ram 1500 4x4 4.7 engine light came on
asked Feb 21, 2017 by
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1 answer 796 views
What will happen if I remove the honeycomb from the catalytic converter?
asked Feb 20, 2017 by
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1 answer 421 views
2000 Chevrolet Blazer Vortec 4.3L with engine code P0420
asked Feb 17, 2017 by
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1 answer 323 views
what is bank1 on a honda 3.0 2003 model
asked Feb 16, 2017 by
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1 answer 905 views
Can Code P0420 come on from oil in spark plug?
asked Feb 15, 2017 by
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1 answer 667 views
P0420 2007 Toyota LandCruiser
asked Feb 6, 2017 by
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