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  #1  
Old 10-07-2009, 02:19 PM
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Check Engine Light Codes 1990 190E 2.6L

I have a question regarding my check engine light. My light has been on for a while and yesterday (10/6/09) changed out my spark plugs (H9DCO, Bosch) from the MB dealer and wires as well as having a new O2 sensor put on today. I have searched this forum and 2 other forums about how I can get the light off and check the error codes. I know about disconnecting the battery and reconnecting it, which works for a little while, then the light is back on. I read that you can press a button x amount of seconds under the hood and it will flash x number of times to give you a reading. I have found the button right in front of the battery, but I am unsure of when I need to press it. Should the car be running? should it be off? I have pressed it, but when I do the red light will stay lit for as long as I am holding down the button. So any help on trying to get a code read or fix my check engine light would be greatly appreciated. Thanks.

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Old 10-07-2009, 03:33 PM
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Car off but ignition on.....hold the button for 3ish seconds, it should then begin blinking the first code. Count the blinks. Do it again when its done, if it blinks once, that is the "end of codes" code....if it does another number of blinks, count them, and that is another code.

To clear them you have to hold the button down for 10 seconds for each code to clear it. It will clear and turn off the check engine light once you turn the ignition off and on again.
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Old 10-08-2009, 01:59 AM
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Thank you for your help. i went outside and reset the light, but i had to stick metal, ie paper clip into one hole and the other end into another for the flashing to start. i got codes 11 and 16. i stuck the clip into hole numbers 1, 3, 6, 7, 14 (no activity on 14) and then i alternated them by bridging 6 and 3 1 and 3 and so on. as i ridged 7 and 1 (I think those 2) i heard a noise from the engine as if a flap or something was closing....not sure what that was all about, but when i went back into the car i saw that the are circulation button was flashing and i turned the car (or ignition off) and when i started the car the check engine light was gone. i did as u said and held down the button to erase the codes and i retried to see if i would get different codes, but after bridging the holes again and resetting the codes by holding down the button 10= seconds the light would only flash once. i looked up what the one flash meant and it said there were no more faults according to this link:

thank you again and hopefully this will help out someone else.....im gonna go drive the car now and see if its gone for good.
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Old 10-08-2009, 09:07 PM
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ok so i drove the car and the damn light came back on......wtf?! then upon closer inspection from the above link, im not sure if the codes are actually the same. still getting 11 blinks. any suggestions?
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  #5  
Old 10-08-2009, 11:04 PM
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11 blinks is the air injection system. Check your vacuum lines, especially the hard plastic line along the valve cover. I had the same 11 blinks and found a damaged line going into the SOV by the battery.
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Old 10-09-2009, 01:27 AM
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SOV? what is that and where is that? i just checked my lines......i replaced most of the rubber tubing that connect the lines bec they were old and brittle...found one part that seems really worn out, a valve of some sort on the passenger side in front of the firewall. i ordered it and will pick it up tomorrow, but if i blow in it i get air out of the other end and if i blow in the other end....i still get air! lol. same as the piece that allows for my a/c and heater to run at the same time. i just need to save up the money to buy that piece, not really a priority now, now that the summer is over.
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Old 10-24-2009, 06:07 AM
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Just a status update. This issue has been resolved. It was the check air valve.
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Old 02-15-2014, 02:54 PM
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What does 8 blinks mean?
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Old 02-15-2014, 11:15 PM
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Arrow

Quote:
Originally Posted by Lope_dogg7 View Post
What does 8 blinks mean?
Altitude pressure signal from EZL ignition control unit.
Attached Files
File Type: doc W201 Error Codes.doc (13.5 KB, 438 views)

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