P0173 code on 2008 c300 - MBWorld.org Forums

Apr 7, 2022 | 02:17 PM

Obi3ice

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2008 c300 4MATIC Sport

P0173 code on 2008 c300

Hi Benz lovers. I got a code P0173 on my 2008 c300 and it read fuel trim bank 2. What would be the possible cause and how could it be fixed?

Apr 7, 2022 | 04:22 PM

JettaRed

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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)

What did it read? Lean or Rich?

Apr 7, 2022 | 04:24 PM

JettaRed

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https://www.mercedesmedic.com/merced...s-p0170-p0173/

Apr 7, 2022 | 05:27 PM

Obi3ice

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2008 c300 4MATIC Sport

Quote:

Originally Posted by JettaRed

What did it read? Lean or Rich?

Rich.

Apr 7, 2022 | 05:30 PM

Obi3ice

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2008 c300 4MATIC Sport

Quote:

Originally Posted by JettaRed

https://www.mercedesmedic.com/merced...s-p0170-p0173/

yes those are the two codes. So it’s the MAF sensor. Guess it’s starting to fail so would have to change it......again.

Apr 7, 2022 | 05:39 PM

JettaRed

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If you are running rich, it's unlikely a vacuum leak or failing fuel pump.

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