E-Class (W211) 2003-2009

Code p3243 anyone

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Old Jan 28, 2024 | 02:02 PM
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jakubmomentum's Avatar
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Sl550
Code p3243 anyone

I have a 2008 Mercedes E320 Bluetec

Does anyone know what this code might mean?
p3243

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Old Jan 28, 2024 | 03:19 PM
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Sl550
I can go try to see if my friend has time today.

it might be one of these codes



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Old Jan 28, 2024 | 06:12 PM
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W212 MY'14 M276-3.5NA @75kMi
regular maintenance

These codes mean your diesel engine needs regular maintenance besides oil changes.

Faults suggested items are :
  • Fuel filter
  • Exhaust sensor
  • (Air filter...)

Last edited by CaliBenzDriver; Jan 28, 2024 at 06:14 PM.
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Old Jan 28, 2024 | 07:34 PM
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Sl550

I have recently installed new air filters, but I have this code before then. When you say exhaust sensor, would it be this one?
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Old Jan 28, 2024 | 09:24 PM
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W212 MY'14 M276-3.5NA @75kMi
FILTER first

Originally Posted by jakubmomentum

I have recently installed new air filters, but I have this code before then. When you say exhaust sensor, would it be this one?
Yes this is a good candidate BUT IMAGINE THAT... if you don't have enough rail fuel injected you don't get enough exhaust pressure... Meaning deal with FILTER as your first step.

Do yourself a favor... do not buy counterfeit look alike parts. The better parts will save your time + money. The junk parts will fail before 6 month if you're lucky.

Last edited by CaliBenzDriver; Jan 29, 2024 at 05:33 PM.
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