W204 in limp mode.

B

Bighamps

New Member
Joined
May 9, 2016
Messages
6
Reaction score
0
Location
Ware
Your Mercedes
CLS400 2016 W218
I took my car for diagnosis and the error code pointed to the EGR valve.

They fitted a new one and it went into limp mode on the way home. They have tried various things including new hoses and replacing the engine exhaust temperature sensor.

So, today I bought an ODB reader and the code was P0401 Exhaust EGR Flow Insufficient.

It’s a W204 350 CDI 2010.

Any ideas what they have missed!
 
onefortheroad

onefortheroad

Senior Member
Joined
Dec 8, 2015
Messages
3,471
Reaction score
2,099
Location
uk.
Your Mercedes
Me -2019 GLC 350 coupe AMG line. Mrs- ford kuga 65 plate awd powershift .
Common Diagnosis Mistakes
Replacing the EGR valve without checking the air passages of the intake manifold or the temperature sensor
 
alexanderfoti

alexanderfoti

MBO Forum Supporter
Authorised Forum Supporter
Joined
Mar 25, 2010
Messages
15,166
Reaction score
6,354
Location
Tonbridge
Your Mercedes
W221 S65 AMG - W204 C63 AMG + Various other MB's
Or checking that the maf is reporting the correct information.
 
You must log in or register to reply here.

AIB understand your special Mercedes deserves a special insurance policy. We have a refreshing attitude to insuring high performance, modified, imported or classic and vintage cars and deal with the UK’s leading insurers. We offer discounts for length of ownership, where the vehicle is kept overnight and limiting the mileage and can also cater for those clients who need higher mileage and business use. To obtain a quotation please call the team on 02380 268351 or visit us atAIB Insurance
Top Bottom