Hello all,
There is nothing specifically wrong with my 08 C300, but I suspect that a ducting door is not functionioning properly. Occassionally I hear a banging that sounds like a plenum door opening and closing. So I scanned the codes and I have 20 pages of codes There are three uniuqe codes and i don't know how to interpet them:

01-4C-20780
01-4C-20701
01-4C-08106

Do you know where I can find a reference to a list of codes, or can you tell me what these are? I assume the "C" is for chassis but I'm used to seeing a P, B, or C followed by 4 digits. Not sure how to read the above.
Regards,
Rick

 

Hello all,
I see more than 60 views and no responses. Am I missing something here? Can someone point me to where I can find the definitions to these codes?
Regards,
Rick

 

Hi Rick,

This is all I have for "C" codes but not sure if they applicable for MY 08:

Chassis

C1000 Traction System Control Module
C1010 Battery Voltage Low
C1011 ASR/ETS/ESP Circuit Open or Shorted
C1012 Battery Voltage High
C1020 CAN Communication Fault
C1021 CAN Communication With EA/CC/ISC Control Module Interrupted
C1022 ESP CAN communication with the engine system is faulty
C1024 CAN Communication With Engine Control Module Interrupted
C1025-003 CAN Communication BAS communication with ESP control unit faulty
C1032
C1034-000 ESP No signal via CAN from the ETC (electronic transmission control unit)
C1035 ESP Fault in CAN communication with N80 steerting column module
C1043-015 No signal via CAN bus from the IC instrument cluster
C1100 Left Front Axle VSS Circuit Fault
C1101 Right Front Axle VSS Circuit Fault
C1102 ETS/ASR, ABS Left Axle VSS Circuit Fault
C1103 Right Rear Axle VSS Circuit Fault
C1121 AIRmatic: fault in component B24/3 (acceler. sensor)
C1122 AIRmatic: fault in component B24/4 (acceler. sensor)
C1123 AIRmatic: fault in component B24/6 (acceler. sensor)
C1132 AIRmatic: fault in component B22/8 (level sensor)
C1133 AIRmatic: fault in component B22/9 (level sensor)
C1135 AIRmatic: fault in component B22/3 (level sensor)

C1140-008 ESP, play in steering column causes steering angle sensor to lose memory
C1140 Steering Angle Sensor N49 faulty

C1142 ABS Lateral Acceleration Sensor Open/Shorted
C1144 AIRmatic: fault in component B7 (pressure sensor)

C1140 ESP fault: pin 18,19,20 on ESP controller corroded
C1145 ESP fault: pin 18,19,20 on ESP controller corroded

C1185 Faulty BAS diaphragm travel sensor unit

C1200-008 Stop Light Switch Open/Shorted/misadjusted. Implausible as compared to BAS diaphragm travel sensor input
C1200 BAS/ETS light on: stop light switch defective
C1201
C1202
C1207 stop light switch defective


C1303 Right Front Axle Solenoid Valve (Hold) Open/Shorted
C1304

C1311 Switchover Solenoid Valve (Release) Open/Shorted
C1312 Master Cylinder Switchover Valve
C1314 ESP:
C1332-004 BAS:

C1401 High Pressure Return Pump Circuit Open/Shorted; Will Not Shut Off
C1401 High Pressure Return Pump A73N1; ABS return pump relay K25

C1405

C1501 SPS P-Valve
C1504 BAS light, play in steering column causes steering angle sensor to lose memory(?)
C1512 Brakes Overheated
C1525 ABC Critical vehicle level
C1529 ESP:
C1600 Temperature After Engine Is Turned Off


Regards,
paul...

 

Hi Paul,
Thanks, I had found those too. Seems like my codes are either more detailed or they are using a different standard. These aren't OBD-II compliant codes in my car are they? Does anyone know?
Much Thanks in advance.
Kind regards,
Rick

 

They sure as heck don't look like OBD2 compliant codes -- they could be internal codes that only the MB Star Diags tool can interpret.

Regards,
paul...

 

You think if I bought a days access here, I might be able to figure it out?

https://www.startekinfo.com/StarTek/index.jsp

RickP

 

I'm guessing your year/model uses the same basic parts as the W203 in the HVAC system. Your symptom matches the sound a broken stepper motor linkage makes. A louder 'snapping' noise indicates a bad stepper motor. These linkages and motors move the air ducting vents. On my model if you hold down the defrost and recirculate buttons simultaneously it goes into a mode that resynchronizes the stepper motors (10 on mine!). You can hear them opening and closing and feel the air change to different vents. It should stop after about 30 seconds. If it keeps going there is a problem....which you'll probably hear anyway. Don't ignore it as the eventual fix is costly....requiring removal of center and lower dash panels. Aren't you still under warranty?

 

Oh yes, My service advisor blew it off when I asked him last, I can't notice what is not functioning, but I swear if I stop hard I can hear the vent close (or open). I can't tell which duct it's changing - if i could then I'd have a leg to stand on.
I had to get the blower motor replaced several weeks ago, and I brought it in when it was acting up and they said they couldn't find anything wrong, but I recall he said there was an error code on a duct motor. That's why I want to find out, but It sounds like I should schedule a visit anyway. I have an annual inspection coming up so perhaps that's a good time.
Regards,
Rick

 

any updates on codes??

i seem to have the below diag codes when checking engineering menu...
01-4c-20780
01-4c08106

only issues i seem have are pulsing rpm needle and engine??

 

hi i have a E320 1999

y have this codes

read..

c1000modulo de control es defectuoso (controle module defective)

c1332valvula de selenoide de bas A7/7Y1 (selenoide valve BAS A7/7Y1)



i dont really understand this coes doies this mean i have to change de modules

 

Hi did you ever figure out these codes- I have the same three
thanks

 

If stored have you tried erasing.

01-4c-20780 - front lights malfunction
01-4c-08106 - faulty intake air sensor
01-4C-20701 - ?