2000 430CLK Cabriolet

What is this problem ?
Greek to me.

Error Code 0455 System Regeneration leak/Tank Pressure sensor

See link:
http://www.panchogun.com/FVWebPhotos...Error-0455.jpg

 

These are for 320 - but location and test procedure should be the same (values may be different, I'll check WIS this evening if you haven't resolved it).



1998 Mercedes Benz CLK 320 (208.365) V6-3.2L (112.940)

Top - Vehicle
Powertrain Management
. Computers and Control Systems
. . Testing and Inspection
. . . Trouble Code Diagnostic Charts
. . . . P0455
. . . . . Purge Control System (Major Leak) or Voltage Supply of Component B4/3 (Fuel Tank Pressure Sensor)

.



Notes


Purge Control System (Major Leak) or Voltage Supply of Component B4/3 (Fuel Tank Pressure Sensor)

Purge Control System (Major Leak) or Voltage Supply of Component B4/3 (Fuel Tank Pressure Sensor)

Check Component B4/3 (Fuel Tank Pressure Sensor). (Only (USA))



Test 1 Check Actual Value B4/3 (Fuel Tank Pressure Sensor)
Test 2 Test Voltage Supply of Component B4/3 (Fuel Tank Pressure Sensor)

1 Check Actual Value B4/3 (Fuel Tank Pressure Sensor)





Figure legend


019 Vacuum tester
b Purge line from activated charcoal canister to component Y58/1 (Purge control valve)
Y58/1 (Purge control valve)
Test sequence


Switch off ignition.
Detach purge line to activated charcoal filter at component Y58/1 (Purge control valve) and connect vacuum tester to purge line.
Switch on ignition.
Actuate component Y58/4 (Activated charcoal canister shut-off valve). (Operate pushbutton F2.)
Note: Component M4/3 (engine/AC electric suction fan) runs with an on/off ratio of 50 % during the actuations for safety reasons.

Note! Communication with ECU required.

** End of Test **

2 Test Voltage Supply of Component B4/3 (Fuel Tank Pressure Sensor)

Test requirement


The actual value is not o.k.
Test sequence


Switch off ignition.
Connect socket box to component N3/10 (ME-SFI control module).
(D.4) 36 <--> 38 (D.6)
Switch on ignition.
Specified value


Voltage [4.7...5.3] V
Question


Is the measured value okay? Yes
The measured value is o.k.
Further possible causes of fault


Inspect cables from component N3/10 (ME-SFI control module) to component B4/3 (Fuel tank pressure sensor).
B4/3 (Fuel tank pressure sensor)
No
The measured value is not o.k.
Possible cause and remedy


Inspect cables from component N3/10 (ME-SFI control module) to component B4/3 (Fuel tank pressure sensor).
** End of test **

 

MuskRatBenz is the MAN!

 

Wow Muskrat, that is one fine response.
I'll take a shot at it this weekend.
Thanks again, that's some mighty helpful info.

 

That was just a crude cut and paste from AlldataDIY. They seem to be largely ignored here - and certainly do need to be combined with at least EPC. The saving grace is that a 1yr subscription for a specific vehicle is $25 (I think I remember that right - whatever, it was cheap). It's not the best thing I've used (I have pulled up "maintance - rear differential" and got a diagram of what I swear was a crude outline of David Hasselhof). Still, for the price of 4 quarts of Mobil 1 - you can't really go wrong. A lot of the references assume we have full STAR diag. equipment, but it still gives us a place to start. Below are some component locations. The canister itself is in right rear wheel housing on my car (I had a similiar problem - and I fixed it, but I really don't know how. Pulled things off, shook them around, blew ut the canister, code went away. Still don't know why). Canister is listed as right rear wheel housing - I was thinking I remember mine being on the right side, but I always end up doing these things at 3:00 am., so don't trust me.