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What is low threshold cat mon bank 1 mean? - 1999 Volvo V70

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Oxygen sensor is bad or converter has gone bad, sensors have to have a special tool Or 18 mill wrench and some heat applied to remove, also unclip from harness (remove retainer plastic pin and then unclip the two halves by prying up on clip with small screwdriver )replace all three Even though bank 1 refers to one side of the car , do all its time. ,Take with u to store some are different if problem persists u need a catalytic converter.

Posted on Apr 08, 2011


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