C Class (W205) C 180 BlueTec,C 200 BlueTec,C 220 BlueTec,C 220 BlueTec BlueEfficiency,C 250 BlueTec,C 300 BlueTec Hybridplus,C 180,C 180 BlueEfficiency,C 200,C 250,C 300,C 400 Plug-in Hybrid,C 400

Electric Power Steering (Fault Codes)

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 24, 2025 | 08:27 PM
  #1  
Cails's Avatar
Thread Starter
Newbie
 
Joined: Dec 2024
Posts: 5
Likes: 0
Electric Power Steering (Fault Codes)

Fault codes reading


B210D-00 The power supply is too low
B210F-00 Input circuit 30 has a malfunction
U0101-00 Communication with control unit transmission has a malfunction

Anyone got ideas about these codes showing up with intermittent steering malfunction issue.

Has anyone come across this and if so what is the solution ?
Reply
Old Jan 24, 2025 | 11:34 PM
  #2  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 11,993
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
OPPORTUNITY TO FIX THIS: WELL OR WRONG...

Originally Posted by Cails
Fault codes reading


B210D-00 The power supply is too low
B210F-00 Input circuit 30 has a malfunction
U0101-00 Communication with control unit transmission has a malfunction

Anyone got ideas about these codes showing up with intermittent steering malfunction issue.

Has anyone come across this and if so what is the solution ?
Seek timely professional help with this safety issue.
You electric steering rack is requesting attention.
The rack module is very sensitive to poor conditions.

Actually there may not be anything wrong with the rack itself but only poor environment conditions causing rack to act up. Namely
CAN-Bus signal
Floating GND
low power supply

Check chassis voltage while faults are active. Battery, Alternator or GND may have gone marginal.

Last edited by CaliBenzDriver; Jan 24, 2025 at 11:36 PM.
Reply
Old Jan 25, 2025 | 04:53 AM
  #3  
Cails's Avatar
Thread Starter
Newbie
 
Joined: Dec 2024
Posts: 5
Likes: 0
Thanks could something such as the ghost immobiliser causing this to happen?
Reply
Old Jan 25, 2025 | 05:14 AM
  #4  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 11,993
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Originally Posted by Cails
Thanks could something such as the ghost immobiliser causing this to happen?
electric steering use no ESL immobilizer.
Reply
Old Jan 25, 2025 | 07:26 AM
  #5  
trigital's Avatar
MBWorld Fanatic!
10 Year Member
Photogenic
Community Builder
Liked
 
Joined: Dec 2011
Posts: 1,726
Likes: 493
From: Spain UTC/GMT +2 hours
W213 All-terrain
More likely some water over the connectors,
Reply
Old Jan 25, 2025 | 09:02 AM
  #6  
Cails's Avatar
Thread Starter
Newbie
 
Joined: Dec 2024
Posts: 5
Likes: 0
Thank You
Power steering malfunction light occasionally also popping up on the dash
Reply
Old Jan 25, 2025 | 03:45 PM
  #7  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 11,993
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Originally Posted by Cails
Thank You
Power steering malfunction light occasionally also popping up on the dash
take your car to your independent MB specialist whom you trust will not jump at replacing your $8000 steering rack for a basic GND post oxidation issue.

Your faults show a marginal PWR/GND connection.

Have you driven in heavy rain or standing water ??
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 06:24 PM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE