Question about 2001 Mitsubishi Montero

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Eng check lite

The eng check lite comes on for a few days then goes off for a day or two then comes back on.
i had the front two O2 senors changed last yr and had the fuel injectors clean.
still doing the same thing. the test reading comes back as O2 senor bank 1. no one knows where bank 1 is.

any help- could it be a bad connection or hole in hose?

Posted by on

  • october21 Oct 21, 2008

    it is actually both error messages

  • hick_fix May 11, 2010




    Is it bank 1 sensor 2 or bank 1 sensor 1?


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  • 27 Answers

Weird. usually an intermitent problem like that for are o2 sensor means that your catalytic converter is starting to cause problems but that should only set a code for sensor 2 not both sensors. sorry i cant be more help

Posted on Oct 24, 2008

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