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修理P0401码 2000 CAMRY 2.2L

check engine灯亮有近三年,开始时亮时灭,后来常亮,读码P0401。最近听说明年尾气新例灯亮不通过,开始着手修理。过往尾气测试结果都远低于标准,这个月初还测了一次,以备明年用(当时怕今年修不好)。研究了一些camry论坛,如toyotanation,tundrasolution等。不少人反映大多数原因是vsv。先清了EGR阀,检查了vacuum modulator,感觉都是好的。开了几天,灯亮照旧。于是先赌vsv,ebay上找到了原厂件,$49.99+$8.25邮费,10天收到。

http://www.ebay.ca/itm/ws/eBayISAPI.dll?ViewItem&item=251166653926&ssPageName=ADME:B:WNARL:CA:1123

此前旧vsv已经被我移动到上面,这回换件没花时间。换了新vsv后怠速不稳,时高时低。读码一大堆0401,0402,0105,0300,我知道其他码都跟怠速不稳、某缸misfire有关。折腾了好几天,终于发现,原来两根管子接错了,对调以后怠速正常。断了电池负极5分钟,清码灭灯,又开了三天。再用scanner检查各项monitor都ready,MIL is off,仪表盘check engine灯也没亮。应该是修好了吧!
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  • 枫下家园 / 我爱我车 / 修理P0401码 2000 CAMRY 2.2L
    • 日本车黑。
    • My car has P0420 and P0442. The check engine light has been on for 2 years. Your information is helpful. I don't know too much about cars and I would like to know what is "vsv". Thank you!
      • vsv stands for vacuum switching valve. You can search http://www.obd-codes.com/trouble_codes/ to get more info about the codes.
      • Starting Jan 1st 2013 "check engine light on" will not pass drive clean test. Not sure what year your car is, if it needs test next year you'd better have it tested this year.
        • 今年测过的,明年就不用了吧?我的Engine灯也亮了很旧了
          • 有效期一年。在有效期内更新sticker是没问题的。
        • 如果我擦掉错误码,他们是否读得出来
          • 读得出来。参见前不久的帖子,里面有详细讨论,还有官方文档。http://www.rolia.net/f/topic.php?f=0&p=7915246
            • 我是说:人家读得出来你刚刚删过码。因为刚刚删过码后,多项I/M monitor处于NOT READY状态,从而失败。
          • 如果擦掉错误码导致读不到信息,直接就fails。所以check之前一个月或2个月不能断电。