3.0 Diesel P0490 - Mercedes-Benz Forum
 
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post #1 of 1 (permalink) Old 04-18-2019, 05:50 PM Thread Starter
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Date registered: Apr 2019
Vehicle: 2008 R320
Location: Lacombe, Alberta
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3.0 Diesel P0490

So I have a 2008 R320, pre DEF.
I'm getting a P0490 code and limp mode, so I changed out the EGR valve and......
I'm still getting the code.
I cleared the codes and it comes back before I even start the engine!
The vehicle has original batteries I'm wondering if it could be low battery voltage?
Any thoughts would be appreciated.
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