Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-12-2001, 03:50 AM
Registered User
 
Join Date: Mar 2001
Location: Oakland, CA
Posts: 35
Can anyone provide the meaning of fault codes
9, 18, and 26. A friend has these codes showing
up after his mechanic replaced a module that
controls the AC in his '93 400E.

Thanks.
Forrest

Reply With Quote
  #2  
Old 06-12-2001, 04:27 AM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
http://pages.prodigy.net/jforgione/MB_S500.html

That is JimF's website. That site should have the codes for what you are looking for. Good luck!
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Reply With Quote
  #3  
Old 06-12-2001, 01:20 PM
Registered User
 
Join Date: Mar 2001
Location: Oakland, CA
Posts: 35
Fault Codes for M119

David, thanks for the reply. I checked Jim's site and
could not find a listing of fault codes. He does write
about a couple of sources for the code information though.
Forrest
Reply With Quote
  #4  
Old 06-12-2001, 06:58 PM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Reading, the key to success. . . .

Forrest,

The faults codes (called Diagnostic Trouble Codes; DTC) are contained in menu #5. These codes are stored in the DIAG MODULE (N59).

Since you weren't able to 'decipher' the page, here they are:

9 ---Intake Air Temperature sensor (IAT), open/short
18 --Adjustable camshaft timing solenoid, open/short circuit
26 --Upshift delay 1 to 2 (model 123.034) , 2 to 3 (all models)

They all 'point' to the LH-SFI module and need to test it. But, of course, it could be;
"9" -- a loose or bad IAT. It's located in the left side (drivers side) on the air intake hose.
"18" -- a bad camshaft solenoid; located on the header (each side)
"26" -- probably a bad vacuum line.

Hope this helps you.
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page
Reply With Quote
  #5  
Old 06-12-2001, 07:39 PM
Michael's Avatar
Veteran
 
Join Date: Jul 1999
Location: CT, USA
Posts: 2,699
Replace your intake Air Temp sensor-it's a $25 part, and takes about a minute to replace. It's the sensor installed in the plastic panel behind the left side headlight that routes air up toward the airbox...it's the piece you remove to re-aim the headlight.

These things are cheap and do go, so get it out of the way for starters. Good luck solving the other issues; sorry I can't help.
__________________
"If everything seems under control, you're simply not going fast enough" --Mario Andretti

Michael
1995 E500 street car
1986 Porsche 944 Turbo S track car
Reply With Quote
  #6  
Old 06-12-2001, 09:44 PM
Registered User
 
Join Date: Mar 2001
Location: Oakland, CA
Posts: 35
Fault Codes for M119

Jim,

Thanks for deciphering the page. I'll try your
web site again and will pay particular attention
to menu item (5).

Forrest
Reply With Quote
  #7  
Old 06-19-2001, 05:33 PM
Registered User
 
Join Date: Mar 2001
Location: Oakland, CA
Posts: 35
Fault Codes for M119

Thanks to all for your feedback. The problem turned
out to be due to a faulty basic control module that
had been replaced to fix an inoperable AC.

Jim, your site has proven very useful to several
people and is respectfully referred to as the
"rosetta stone" of M119 tech info.

Regards,
Forrest
Reply With Quote
  #8  
Old 06-19-2001, 07:13 PM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Glad it's fixed!

I had some problems with DTCs and was determined to fix it myself, thus the 'birth' of my page(s).

Glad it helped you too!
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page
Reply With Quote
  #9  
Old 06-20-2001, 08:55 AM
Michael's Avatar
Veteran
 
Join Date: Jul 1999
Location: CT, USA
Posts: 2,699
I still stand by my recommendation...perhaps it wasn't the issue this time (Go Jim!!), but they're cheap and do die frequently.
__________________
"If everything seems under control, you're simply not going fast enough" --Mario Andretti

Michael
1995 E500 street car
1986 Porsche 944 Turbo S track car
Reply With Quote
  #10  
Old 02-04-2003, 07:46 PM
Registered User
 
Join Date: Apr 2002
Location: Hollywood Hills, CA
Posts: 891
Quote:
Originally posted by Michael
Replace your intake Air Temp sensor-it's a $25 part, and takes about a minute to replace. It's the sensor installed in the plastic panel behind the left side headlight that routes air up toward the airbox...it's the piece you remove to re-aim the headlight.

These things are cheap and do go, so get it out of the way for starters. Good luck solving the other issues; sorry I can't help.

so what does the IAT sensor actually do for the performance of the car...
aside from turning on that light?
__________________
~there is no spoon~

1984 300CD Turbo Diesel (soon to be "powered by VEGGIE") - dolphin silver

1999 e430 Sport blk/blk, my sexy ***** ;-)

(my other girls)
1992 300CE 24V 3.0L (w124) (R.I.P. "she was killed 7/12/03 by some ricer kids speeding in a honda accord")
1990 Acura Integra RS (w/94' engine)
1966 Cadillac Sedan de Ville (Hardtop)
Reply With Quote
  #11  
Old 02-04-2003, 07:57 PM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
IAT sensor

The IAT is another 'semi-key' sensor that determines the air/fuel mixture to the engine.

This sensor reads the intake air temperature (thus IAT) and is mixed with the ECT sensor (and others) to obtain the correct fuel mixture to the engine based on the current engine temp and intake air temp. Very complicated these cars!
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page
Reply With Quote
  #12  
Old 02-04-2003, 07:59 PM
Registered User
 
Join Date: Apr 2002
Location: Hollywood Hills, CA
Posts: 891
YOU'RE TELLIN ME
thanks jimF

do you know how this would affect the performance of a 300CE 24V?
could that contribute to poor gas mileage?
__________________
~there is no spoon~

1984 300CD Turbo Diesel (soon to be "powered by VEGGIE") - dolphin silver

1999 e430 Sport blk/blk, my sexy ***** ;-)

(my other girls)
1992 300CE 24V 3.0L (w124) (R.I.P. "she was killed 7/12/03 by some ricer kids speeding in a honda accord")
1990 Acura Integra RS (w/94' engine)
1966 Cadillac Sedan de Ville (Hardtop)
Reply With Quote
  #13  
Old 02-04-2003, 08:39 PM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Haven't posted this yet . . .

because I'd like to get more data but . . . .

I recently changed my Mass Air Flow (MAF) [stevebfl calls it AMM] sensor. Why?? My gas mileage dropped abit and the dreaded DTC#19 registered in my car (CE light came on). Mileage around 14 mpg.

DTC#19= Bad injector(s) or car's self-adaptation (S/A) is at limit in the LH-SFI module.

This failure is common on most V8s between 92 to 95. It seems to occur around 100K+ miles. Have seen four (4) cars that registered DTC 19 with 90K to 106K miles. Mine came on at 103K.

The S/A is programmed by the eprom that's in the LH-SFI module (N3/1) [check my page, menu #1 and/or 2 for its location). The limits are 0.85 to 1.15 as I understand. When the CE lights, the S/A hits the lower limit of 0.85. The car is still running fine, so there's no problem. But since the mixture is a little rich, the car's lambda starts to drop. The system still corrects properly to maintain the correct air/fuel mixture (as close as possible) but you start to burn more gas in the process.

So I changed my MAF. Immediately lambda changed to the lean side. [Waiting for the S/A to recalculate so that's why I haven't posted this.] For example, the injector duration changed from 3.2 millesecs to 2.8millesecs. That means you using less gas for the same, and in my case, much better power even at low rpms (1500- 2000). My gas mileage has gone up: 16.2 mpg on the last fillup.

So will the IAT do the same thing? Don't know but I think that the MAIN determining element is the MAF and secondarily, the O2 sensor. The IAT would probably not be that important for your '90 300CE as far as gas milage is concerned. My opinion.

BTW, if anybody has the DTC#19 problem, send me email because it can fixed very easily at low cost.
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page

Last edited by JimF; 02-04-2003 at 08:44 PM.
Reply With Quote
  #14  
Old 02-04-2003, 08:41 PM
Registered User
 
Join Date: Apr 2002
Location: Hollywood Hills, CA
Posts: 891
thanks...btw....
love the s500 cpe...
which is my choice for my next mbz...
presently i've got the baby of the two...
90' 300CE

lol
__________________
~there is no spoon~

1984 300CD Turbo Diesel (soon to be "powered by VEGGIE") - dolphin silver

1999 e430 Sport blk/blk, my sexy ***** ;-)

(my other girls)
1992 300CE 24V 3.0L (w124) (R.I.P. "she was killed 7/12/03 by some ricer kids speeding in a honda accord")
1990 Acura Integra RS (w/94' engine)
1966 Cadillac Sedan de Ville (Hardtop)
Reply With Quote
  #15  
Old 08-30-2004, 11:31 AM
meldwyer's Avatar
Registered User
 
Join Date: Jun 2003
Location: phila
Posts: 53
1994 s 420 dtc. code 19, need to know how to FIX

hello, i have a 94, s-420 haveing a problem with dtc, cod 19, can any one tell me how to remdy this problem, from what i no code 19, mean fule injectors open/short in lh-sfi control module n3/1 at limit/ can any one explain tis to me on how i can fix,,, thank,s meldwyer car is useing alot of GAS

__________________
meldwyer
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Troubleshooting using fault codes Motor Head Tech Help 2 06-18-2003 09:44 AM
126 fault codes radlark Tech Help 2 05-03-2003 09:20 PM
Seeking fault codes for 1996 E320 (W210 / M104) aTOMic Tech Help 1 08-13-2002 01:16 PM
E220/e320 Fault Codes grober Tech Help 7 08-02-2002 10:27 AM
'93 300E(2.8) fault codes revisited! dacia Tech Help 4 12-05-2001 01:18 AM



All times are GMT -4. The time now is 12:28 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page