po422,301,302,303,100

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maskedmoo

New Member
Joined
Mar 1, 2015
Messages
1
Car
mercedes e240
can someone give me some advice on this, ive got a e240 v6 which began showing po422 a number of weeks ago, a friend said it was nothing to worry about as the cats are not rattling so its probably a faulty o2 sensor. today the car seemed to go into limp mode and is running rough when accelerating hard it will just stall. it will idle but sounds like a diesel... could it be a blockage from the cat breaking down. ?
 
maskedmoo said:
can someone give me some advice on this, ive got a e240 v6 which began showing po422 a number of weeks ago, a friend said it was nothing to worry about as the cats are not rattling so its probably a faulty o2 sensor. today the car seemed to go into limp mode and is running rough when accelerating hard it will just stall. it will idle but sounds like a diesel... could it be a blockage from the cat breaking down. ?

The code is not enough. You need to look at the live data to work out the fault.
 

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