Hello everyone.
I tried to find information about code 17 on my E320, but did not find much. Can anyone give me some advice.
Thanks

DTC# -- Desc
1 ------No Fault Found
2 ------Heated oxygen sensor faulty
3 ------Lambda control faulty
4 ------Air injection system faulty hot film mass air flow sensor with hot wire
5 ------Exhaust gas recirculation faulty
6 ------Idle speed control faulty
7 ------Ignition system faulty
8 ------Engine coolant temperature sensor open circuit
9 ------Intake air temperature sensor, open circuit
10 -----Voltage at mass air sensor too high/low
11 -----Tn-signal (rpm signal ) at engine control module faulty
12 -----Heated oxygen sensor heater circuit open or circuit short
15 -----Injector, cylinder 2
16 -----Closed throttle position information faulty
17 -----Data exchange malfunction between individual control module
18 -----Adjustable camshaft timing solenoid circuit open or circuit short
19 -----Injectors circuit open or circuit short emission control module adaptation in engine control module at limit
20 -----Vehicle speed signal not present
21 -----Purge switchover valve circuit open or circuit short
22 -----Crankshaft position sensor signal faulty
23 -----Intake manifold pressure (in base module pressure sensor-) with engine running too high/low.
24 -----Starter ring gear segments and /or crankshaft position sensor faulty
25 -----Knock sensors or engine control module faulty
26 -----Upshift delay faulty
27 -----Not used
28 -----Engine coolant temperature sensor (engine coolant temperature change monitor )
44 -----Not used
45 -----Fuel safety shut-off electronic accelerator or cruise control active
46 -----Resonance intake manifold switchover valve
47 -----Not used
48 -----Not used
49 -----Voltage supply at engine control module 8v
50 -----Engine control module

Has the engine wiring harness been replaced??

__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page

That seems like a bad connection or faulty wire from where I sit.
It could be worst and one of the computer bit the dust or works only half or???

CAN (Controller Area Network) is a electronic bus (two wire) that communicates serially binary data between the various On Board Computer and other "smart " devices.

Strangely, I am guessing your car does run, with a CAN failure your car should not run, or at least miserable.
If it runs but badly, this is a good sign! Then the ECU might have fallen into "LIMB HOME" or simply runs of default without any adaptation.

Meaning, the ECU is probably fine. The next one could be the e-gas, passenger side under carpet, there is a metal plate that is held by a single phillips screw.
Underneath is the e-gas computer. Check that connector.
Since all devices, connected to CAN, have the abillity to keep the bus signal at a fixed state, any device that is on that bus is suspect, even the ABS computer!

Check your connector, passenger side behind the battery and make sure they are properly seated.
Other than that, only a STAR diagnostics scanner with live data might shed light into the dark.
If the CAN is canned, then the scanner can't hook up with computer either, since it would try to pull data from the CAN.

A MB shop might be able to swap ECU, E-gas and other "smart" controller to determine which one is holding the bus down.

Otherwise, anything is guess works.

__________________
Mostly, I don't know notin, I just know where to look.
I am looking back, to over 30 years in Electronics Design.
Electrons don't care if they move in a car, computer or relay!

95 W124 E320 M104.992 - Because, I love to repair, naaaah!
Over 221,000 Miles
Cheers,
Norbert

Hi everyone,
I am not sure if the harness has been replaced. The car runs perfect. I noticed that the cruise control is not working, and gives code 17 CAN communication. I have another 320 so I can swap out the e-gas control to see if this code goes away.
Questions:
1. If car runs fine, can we assume the ECU is good?
2. CAN communication is between which computers?
3. OPV is new, battery good, what else I can check?

btw: where is the ABS computer?

The codes you read "point" toward a deteriorating wiring harness and/or a crumbling ETA wire harness. Need to inspect it to be sure.

You need to actually determine if the w-h has been replaced; if not, it MUST be done before anything else, since it does cause the #17 and cruise control to APPEAR bad when they're not.

__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page

Thank you all for the info. I will check the harness then report back to the forum
Phat

I have an issue with E320 1994 coupe as high idle after restarted the car.

Anybody can help to solve the high idle problem on E320 1994