C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Error message 791

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Old 09-27-2021, 09:56 AM
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c200 wdb204 2008
Error message 791

I am owner of a C200 k model 2008 and a few days ago i got the "791" message in service. Does anyone knows what is actually the problem?
The car starts an sometimes it sounds and i feel the rpm goes from 1k to 2k every 2sec. But after a minute the Rpm drops in 1k almost.
Is there a serious problem?

email: nikdeca@gmail.com

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