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Bradleybiglift

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I have a 2007 Toyota Kluger it keeps bringing up P2197 code for the oxygen sensor stuck lean,air/fuel mixture system to lean bank 1 and 2.I have replaced both oxygen sensors with aftermarket ones(don’t know if aftermarket is the problem). I reset the codes and it’s good for awhile then comes back but sometimes it just disappears buy itself then comes back at a loss of what to do?

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As per the following URL, start by checking for debris in the Mass Air Flow sensor.

https://www.fixdapp.com/blog/p2197-code/

Good opportunity to clean the MAF sensor using the correct spray cleaning fluid designed specifically for that purpose.

https://www.supercheapauto.com.au/p/liqui-moly-liqui-moly-air-flow-sensor-cleaner---158g/394236.html

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