k*****y
发帖数: 744 | 1 车子两个半月没开，idle speed忽高忽低，但check engine light没亮。于是前天拿去修车，换了个idle control的东西+labor $250。回来出去开了20mile之后，check engine light亮了，查code是P0420 Catalyst Efficiency Below Threshold。想问下跟之前换的东西有没有联系，修车的说要换一个Catalyst Converter，旧的也要$5、600。我没有被他黑了？谢谢
车子是99 Acura TL。 | f****t
发帖数: 15913 | 2 It is possible that the CPU caught a 6-sigma event. Just reset the code and
drive it. If it does not show up, you will be fine. This is what I did.
Since you just replaced something, the CPU may sense something is changed
and give you the error.
If it comes back, you can try replacing upstream oxygen sensor first. This
usually fixes P0420 problem.
catalytic converter warranty is much longer than 3yr/36K. If you need to change it, go to dealer and ask them
if it is covered by warranty.
【在 k*****y 的大作中提到】
: 车子两个半月没开，idle speed忽高忽低，但check engine light没亮。于是前天拿去修车，换了个idle control的东西+labor $250。回来出去开了20mile之后，check engine light亮了，查code是P0420 Catalyst Efficiency Below Threshold。想问下跟之前换的东西有没有联系，修车的说要换一个Catalyst Converter，旧的也要$5、600。我没有被他黑了？谢谢
: 车子是99 Acura TL。
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