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Recent questions tagged p0420

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our exhaust is a non BMW part could that cause code po420
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P0420 TOYOTA CAMRY 2002 LE 2.0
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P0171 2003 Toyota Corolla -
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2004 Nissan Frontier XE V6 with codes P0328 and P0430
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Can replacing spark plugs fix error code PO420
asked Jul 31, 2017 by
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P0420 Subaru outback replaced 02 and converts still has code
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1 answer 203 views
Fuel consumption impact?
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P0420 1997 Honda Civic -
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P0420 Honda Odyssey -
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PO420 code, cat/con good & oxy sensors good. What else ??
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P0420 Hyundai -
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C1201 - 2005 toyota4runner what does this mean
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Why am i popping p0420 p0444 and p0457
asked Jul 23, 2017 by
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