The check engine light on my 95 E320 station wagon is on.

Checked for codes at pin 8 & 14 and all appears OK (a single flash).

Any advice as to the next step would be appreciated.

Allan Hobgood
95 E320 Wagon
95 E320 Sedan

Pins 8 and 14 do not activate the CE light
Only emmissions related codes from the diagnostic module do that.
Simply get those codes from the built-in led/sw on the same box.

Arthur,

What pin(s) will I find the emission codes?

Thank you,

Allan Hobgood

The box should have a push sw and led built right into it at pins 2 and 4, respectively....

Thanks Arthur.

I cleared it via pins 2 & 4.

Which I've done several times in the last few years. Guess I was just too quick on the trigger this time.

For general knowledge...the check engine light on this car has come on 4-5 times during that past 5 years or so...almost always after a 250 mile, 80 MPH run on an Interstate.

I'll clear it and it will stay off several months.

Something's wrong, obviously, but I figure not seriously wrong.

Thanks,

Allan Hobgood

I would get the codes from that module to see what is causing your CE

Here are the codes for the DM

Emissions - Using Built-in Diagnostic Module
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
_________

Arthur,

The codes were 2 & 5.

I had a hole in an exhaust pipe replaced about a month ago...I'm guessing it has something to do with that???

Allan Hobgood

Possible..

A code 5 on a 104 HFM is usually a blockage at the EGR tube , engine intake side.
There is a simple flow test in the archieves .. try " Egr hand vac" and look for my threads..

I have a simple question. Hope it will be answered. I have 1995 E320, SW, automatic. How can i find and fault or code. Meaning if there is any code stored in the memory how to retreive it witout the help of the OBD2.
Pl guide me as what knob to be pressed in the dash or in the engine compartment to know if there was any code stored.
I am new to this car. In my previous BMW 1995, V-8 530, there was a knob which i use to hold for 2 to 3 seconds and the problem us to come in the dash. If there was nothing wrong in the engine that also use to come that there is no problem at all.
The question is that do we have the same system in Merc 1995 E320?