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S500 Question

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Old 11-11-2011, 09:59 PM
chy's Avatar
chy
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Question S500 Question
Hi I had Mercedez S500. Engine check light is on. DTC from saner says:
1- PO170 / Fuel Trim (bank1).
2- PO173 / Fuel Trim (bank2).
How can I fix those problems. Thanks!!!!
 
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Old 11-11-2011, 10:49 PM
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Originally Posted by chy
Hi I had Mercedez S500. Engine check light is on. DTC from saner says:
1- PO170 / Fuel Trim (bank1).
2- PO173 / Fuel Trim (bank2).
How can I fix those problems. Thanks!!!!
usually the mass air flow sensor...
 
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  #3  
Old 11-26-2011, 08:56 AM
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MAF sensor is your culprit!
 
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