faulty sensor question

Asked by oldlexusowner Aug 17, 2013 at 02:20 PM about the 2004 Lexus LX 470 4WD

Question type: Maintenance & Repair

II recently had  a faulty sensor bank 1 sensor 1 oxygen sensor replaced (6 mo ago) dealer just said I have to replace another oxygen sensor, said there are several? my check engine light came on again with vsc and track off is on... are there several of these that need to be replaced?

2 Answers
95

XDealerTechs answered 10 years ago

There are four sensors. One for each side, before and after the catalytic converters. It is hard to predict when the next one will fail, and some shops/dealerships will sell you both, or all four, so customers will not have the light come back on.

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