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Old 02-17-2018, 05:44 PM
nyko46's Avatar
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Join Date: Jan 2004
Location: Rowlett - Texas - USA
Posts: 472
Question 2009 E320 Diesel P141 Code

A month ago I had again the P141 code for my check engine light.
In the past I had the same code but it went out by itself but now this code is lasting for a month. The engine light came on in a cold day when I was just leaving my garage to go to work and is on up to this date.
According to Autozone printed sheet of the symptoms like hight fuel consumption, it is not my case because the car is giving me the same mileage per gallon same than it was before. The car is running without any trouble comparing before the check engine light.
Since the car is running normal, are there some suggestion in what to do or just ignore this code?

Nyck - TX - USA
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Old 02-18-2018, 12:52 PM
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Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
You could check the OS sensor at Bank 1 sensor 2. IIRC is aft the turbo tucked up next to the firewall. Not easy to get to.

Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
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