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Recent questions tagged p0420

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1 answer 374 views
P0420 2007 Toyota Prius - The code on since we run out gas.
asked Mar 1, 2018 by
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1 answer 361 views
Check engine lite on
asked Feb 27, 2018 by Patience (102 points)
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1 answer 276 views
How to find check engine problems?
asked Feb 27, 2018 by Patience (102 points)
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1 answer 930 views
I have the engine code P0420 on my 2001 Honda Accord ULEV
asked Feb 27, 2018 by
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1 answer 677 views
what is best way to diagnose problem codesp0441,0170,0420,0430
asked Feb 26, 2018 by
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1 answer 704 views
2006 Chevy Malibu 2.4 or 2.2 P0420 & P2119
asked Feb 21, 2018 by
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1 answer 623 views
2002 Toyota Corolla 1.6L with engine code P0420
asked Feb 21, 2018 by
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1 answer 323 views
P0420 Jeep -
asked Feb 20, 2018 by
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2 answers 1.2k views
Can the code P1800 on a 2005 Nissan Murano cause the p0420 code?
asked Feb 16, 2018 by
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1 answer 288 views
How do I fix the code po420?
asked Feb 14, 2018 by
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1 answer 432 views
What does the codes P0700 and P420 mean?
asked Feb 13, 2018 by
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0 answers 393 views
01 Nissan Xterra OBD P0115 P0220 P0420 P0325 P1336 P1420 P1426 how do I fix it
asked Feb 12, 2018 by
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1 answer 1.8k views
how to fix P0420 code on a 2008 Chevrolet Aveo?
asked Feb 8, 2018 by
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1 answer 543 views
2001 Honda Accord EX with engine code P0420, lower power, lower mpg
asked Feb 7, 2018 by
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1 answer 540 views
2002 Toyota Celica with codes P0420 and P0171
asked Feb 4, 2018 by
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1 answer 616 views
I already replaced the cat and still have a p0420 code
asked Feb 2, 2018 by
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