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Discussion Starter #1
Quick question: code states cat bank 2 bad. car runs fine (been this way for 6 months) Question is could it be a MAF sensor ? Just replaced the driver's side OX2 sensors....engine light was out for 2 days...came back again.

any line on replacement cats ?

Thanks,

Rick
 

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99 ML430, 00 ML320, 05 E500 4matic Wagon
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It could be a MAF and is a lot cheaper than a cat. I have a feeling it is the cat.
Most of the time a bad MAF will throw a code.
If the car is in service less than 8 years and less than 80,000 the cat is covered
under federal emissions law if you are in the US.
 
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