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MERCEDES BENZ FAULT CODE MANUAL Online

107K views 17 replies 5 participants last post by  Sam Fuller  
#1 · (Edited)
#2 ·
Waddya think oh wise one's of the world of Benz - WORTH A SCHTICKY ???????
 
#3 · (Edited)
Well I don't know this conflicts with other info I have. Either I had the wrong info or this doesn't specify the M104.980 engine. My code 16 (idle speed control) shows my engine this one doesn't. This shows Exhaust gas recirculation switchover valve open or short circuit. Who is right? 124.051/M104.980 300CE 1990-92 124.051 104.980 KE 717.4/722.3 LSH068/C06
 
#4 ·
Here is mine 1 No faults.
2 Oxygen sensor inoperative.
3 Lambda control inoperative.
4 Air injection inoperative.
5 EGR inoperative.
6 Idle speed control inoperative.
7 Ignition system failure.
8 Coolant temp sensor-open or short circuit.
9 Intake air temp sensor-open or short circuit.
10 Voltage at Air Mass sensor too high or low.
11 TN (RPM) signal defective.
12 Oxygen sensor heater open or short circuit.
13 Cam position sensor signal from-EZL/AKR ign. control unit defective.
14 Intake manifold pressure at start too low.
15 Full throttle Info defective.
16 Idle speed info defective.
17 CAN Data exchange-Malfunction between control units.
18 Adjustable camshaft timing solenoid-open or short circuit.
19 Fuel injectors-open or short circuit or Emission control system adaptation at limit.
20 Speed signal missing.
21 Purge switchover valve-open or shorted.
22 cam position sensor signal defective.
23 Intake manifold pressure w/ engine running too low.
24 Starter ring gear segments defective.
25 Knock sensors.
26 Upshift delay switch over valve-open or shorted.
27 Coolant temp sensor deviation between sensor ciruits 1 & 2.
28 Coolant temp Sensor.
__________________
 
#6 ·
Hey Sam,
Okay as I understand it your engine is a 124.051 - M104.980 yeah ?
3.0 litre 24 valve engine

I found a post on Peachparts and in it the guys gives a simple code list for 3 engine types.

# Flashes PROBABLE CAUSE for Mercedes vehicles 190E and 300 series (2.3L) 1990 thru 1993
1 No System Malfunctio
2 Throttle Valve Switch
3 Coolant Temperature Sensor
4 Airflow Sensor Position Indicator
5 Oxygen Sensor
6 Not Used
7 TD signal
8 Altitude Correction Capsule
9 Electro-Hydraulic Actuator (EHA)
10 Throttle valve Switch and /or Idle Speed Contact
11 Not Used
12 EGR Temperature Sensor

# Flashes PROBABLE CAUSE for Mercedes vehicles 300 series (2.8L and 3.2L) 1991 and later.
1 No fault in system
2 Oxygen sensor inoperative
3 Lambda Control inoperative
4 Air injection inoperative
5 Exhaust Gas Recirculation (EGR) inoperative
6 Idle Speed Control inoperative
7 Ignition System failure
8 Coolant Temperature Sensor - Open or short circuit
9 Intake Air Temperature Sensor - Open or shor circuit
10 Voltage at Air Mass Sensor too high or low
11 TN (RPM) signal defective
12 Oxygen Sensor heater open or short circuit
13 Camshaft Position Sensor signal from - EZL/AKR Ignition Control Unit defective
14 Intake manifold pressure at start too low
15 Fuel throttle information defective
16 Idle speed information defective
17 Controller Area Network (CAN) data exchange - malfunction between units
18 Adjustable Camshaft Timing Solenoid - open or short circuit
19 Fuel injectors - open or short circuit, or Emission Control System Adaptation at limit
20 Speed signal missing
21 Purge switchover valve - open or shot circuit
22 Camshaft Position Sensor signal defective
23 Intake Manifold Pressure with engine running too low
24 Starter ring gear segments defective
25 Knock Sensor defective
26 Upshift Delay Switchover Valve - open or short circuit
27 Coolant Temperature Sensor deviation between circuit No. 1 and sensor circuit No. 2
28 Coolant Temperature Sensor (Coolant Temperature Change Monitor)


# Flashes PROBABLE CAUSE for Mercedes 190E & 300 series (2.6L & 3.0L) 1991 thru 1993
1 No faults in system
2 Throttle Valve Switch (full throttle contact)
3 Coolant Temperature Sensor
4 Airflow Sensor Potentiometer
5 Oxygen Sensor
6 Not Assigned
7 TNA (engine RPM signal)
8 Altitude Pressure signal from EZL Ignition Control Unit
9 Current to Electro-hydraulic Actuator
10 Throttle Valve Switch (Idle Contact)
11 Air Injection system
12 Absolute Pressure valves from EZL Ignition Control Unit
13 Intake Air Temperature signal
14 Road Speed signal at CIS-E Control Unit
15 Not assigned
16 Exhaust Gas Recirculation (EGR)
17 Oxygen Sensor signal
18 Current to Idle Speed Air Valve
19 Not Assigned
20 Not Assigned
21 Not Assigned
22 Oxygen Sensor heating current
23 Short circuit to positive in Regeneration Switchover valve circuit
24 Not Assigned
25 Short circuit to positive in Start Valve circuit
26 Short circuit to positive in Shift Point Retard circuit
27 Data exchange fault between CIS-E Control Unit and EZL Ignition Control Unit
28 Loose contact in Coolant Temperature circuit
29 Difference in Coolant Temperatures between CIS-E Control Unit and EZL Ignition Control Unit
30 Not Assigned
31 Loose contact in Intake Air Temperature circuit
32 Not Assigned
33 Not Assigned
34 Faulty Coolant Temperature signal from EZL Ignition Control Unit

Going by his listing you may have been looking at the 3.2 litre fault codes ?
 
#8 ·
Matches the PDF I put up and the listing above in my last post.

Section for 104.98 engine starts Page 42 - codes on page 48
Think Sam has accidentally checked the 3.2 litre engine codes !
 
#12 · (Edited)
If what I suspect is right the LSC068/C068 will be the Power Steering Gear Type !
I found on "2phast's" website a listing of steering gear in the w124 and others.
http://www.2phast.com/500e/techdocs/steering_boxes.pdf
Whilst this number is not listed on there there is a range of similar designators for the "POWER STEERING GEAR" (like LSC068 LSM068 etc)


ALSO on Page 101 of the Fault Manual there is a model details listing which shows headings
MODEL YEARS CHASSIS
ENGINE TRANSMISSION STEERING

300CE 1987-89 124.050
103.983 KE 717.4/722.3 LS68

300CE 1990-92 124.051
104.980 KE 717.4/722.3 LSH068/C068

300CE 1993-96 124.052
104.992 HFM 717.4/722.369 765.908

300CE Cabriolet 1993-96 124.066
104.992 HFM 717.4/722.369 765.904

And as to your second question the 3.2 didn't show up until 1993 with the M104.992 engine !
 
#13 ·
Hey Guys

The Online MB Fault Code Manual covers 1988-1997 Analog & 1993-200 Digital Codes.

Mercedes Benz Fault Code Manual

OR

Here it is !

View attachment 475227
Hello,

I'm using M111 (.960, may be) on W201.

I got 2, 11 and 29 from the DIY code reader (the blinking LED)
then I was looking through the fault code manual.

BUT
I'm not sure which set of code I should use.

THIS
DTC Readout..................Possible Cause of Failure
2..................................Engine Coolant temperature sensor
11................................O2S 1 heater (before TWC) - Current too high/low or short circuit.
29...............................Not used

OR THIS??
OB15....MB......Possible Cause of Failure

001.....002......Engine coolant temperature sensor, short circuit
002.....003.......Engine coolant temperature sensor, open circuit

008.....011.......Engine idle speed contact Throttle valve position too large
011.....113......HFM-SFI control unit not coded

025.....029......O2 sensor heater (before/upstream of Cat. Conv.), heater current (amp) too small
029.....033......O2 sensor heater (after/downstream of Cat. Conv.), heating current (amp) too large

Can somebody pls help me??

Thanks

Boon