Dtc 26
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Joined: Mar 2004
Posts: 923
From: NJ
Dtc 26
checked my codes for the 93 today and got DTC 26, Quad-Driver Module (QDM) #1 circuit, the hard question would be how will i be able to correct this?....the simple question what be, what the hell is it? 
edit: tried a search came up with nothing....93 codes are different from later years....and my Chilton says absolutely nothing on it
edit: tried a search came up with nothing....93 codes are different from later years....and my Chilton says absolutely nothing on it
Last edited by LT1Squirrel; Nov 2, 2004 at 09:08 PM.
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Joined: Nov 2004
Posts: 54
From: Des Moines, IA
Re: Dtc 26
Ironically, I had this on my 93 as well.
http://home.comcast.net/~fastbird/Tr...ech%20Aids.htm
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Basically, from what I can see code 26 is QDM #1 ... QDM = Multiplexor in the PCM that allows it to control more than one device on one address line.
So in english, for whatever reason your ECU thinks its having trouble controlling either: 1.) The Air pump, 2.) EGR solenoid or 3.) evap purge canister.
I finally got tired of seeing this code in Data Master and disabled DTC #26 in tunercat
http://home.comcast.net/~fastbird/Tr...ech%20Aids.htm
---
Basically, from what I can see code 26 is QDM #1 ... QDM = Multiplexor in the PCM that allows it to control more than one device on one address line.
So in english, for whatever reason your ECU thinks its having trouble controlling either: 1.) The Air pump, 2.) EGR solenoid or 3.) evap purge canister.
I finally got tired of seeing this code in Data Master and disabled DTC #26 in tunercat
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