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Code Help


RottiLV
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I just got back from The Zone, where they scanned my LX450 due to a "check engine" light and here is what it says: P0420 the PCM has determined that the catalyst system efficiency for bank 1 is below threshold for the current engine operating conditions. Bank 1 identifies the location of cylinder #1 while bank 2 identifies the cylinders on the opposite bank.

OK there is the problem what the remedy?

Thanks in advance!

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