2005 Nissan Armada Q&A
2005 Nissan Armada Question: catalytic converter
This does not sound like it makes any sense to me, unless the engine caught on fire. The CAT can't really 'blow back' it can be restricted and cause the engine to get hotter than normal, from over working. What is your Nissan doing that it is in the shop. Did it stop running? - dandd
Service engine light came on a month or two ago. Failed state inspection report indicated both...
...ditions. This rarely causes a Check Engine Light to illuminate and should be repaired to avoid catalytic converter damage.
Code 0420/0421-catalytic converter showed up. How do I clear this without Replacing converters (2). Would a new gas cap help?...