2005 E320 P0400 Code
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Newbie
Joined: Sep 2025
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2005 E320
2005 E320 P0400 Code
Hi, looking for help please, Car will not start, was running excellent, parked it, when I got back in it will not turn over to start, acts as if trying to but don’t, I put the Foxwell scanner on it and it gave the code P0400, anyone knows what’s wrong with it, Also Just had the SBC done with a new ECU put in about 2 mos ago, about 200k miles on it.
Out Of Control!!
Joined: Apr 2019
Posts: 12,172
Likes: 6,883
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
"NO-CRANK"...
How about ESL ?
Read the "drive authorization" from EIS Module.
(not a battery issue here)
Read the "drive authorization" from EIS Module.
(not a battery issue here)
Last edited by CaliBenzDriver; Sep 5, 2025 at 09:10 PM.
MBWorld Fanatic!
Joined: Oct 2015
Posts: 2,440
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From: Merkville the galaxy of Stars
'99 CLK/05 E500 WAG
P0400..The dreaded EGR Vavle: The vavle is more than likely clogged with exhuast ****. I highly recommend replacing, and that would clear up the problem..Ask me? Answer It happend to me. Purchased new part on fleabay for about $60.00, and watched a vide on youtube. Process takes about 1 1/2 - 2 hrs.. hardest part is getting ARG line back into intake manifold, but once in your done. Also recommend getting all new breather hoses. Get OEM hoses from dealership. Good luck, a bit of sweat equity and a cold drink afterwards is your reward!! You got this.
R,
2Merks
R,
2Merks
