Question about Honda Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: 1994 honda accord
The D4 light blinking indicates there is a diagnostic trouble code stored.When a malfunction occurs,the vehicle computer records the code and stores it,then flashes the D4 light to let you KNOW there is a problem.On pre OBD 2 Honda vehicles,1995 and back,Hondas are manual code read,which means you do NOT hook up a scan tool as there is no scan port.The passenger side front kick panel is removed,and a blue 2 wire connector located.Use a jumper wire to short out the connector,then turn the ignition key on,with engine off,not running.This throws the computer into self diagnostic mode,and the D4 or "s" light will flash a series of flashes.The flashes have to be counted,and written down.For example,2 flashes followed by 4 flashes would be a code 24.The code is then looked up with reference material for a description and diagnostic route.Every diagnostic trouble code,has a diagnostic route,for repairing the problem.Again,this informtion,the diagnostic route,is available in reference material from pay sources like All Data Online.After the repair is made,the battery is disconnected to clear the code.Good luck.
Posted on Aug 23, 2008
SOURCE: 92 honda accord lx D4 flashes
you have a transmission fault the D4 light blinks to tell you that there is a transmission problem when the light is blinking the transmission computer put the transmission into limp home mode so it will not shift normally and you should try not to drive it very far when it gets to this stage you need to have the transmission codes check to pin point the problem
Posted on May 29, 2009
Hi, a few questions 1st. Did your mechanic check for engine codes? Is your Honda a v-6 or 4 cylinder?
The flashing D4 light indicates a possible transmission malfunction. You should avoid rapid acceleration until the cause of the light blinking is determined.
If you have the V-6, there is a diagnostic port to connect a scan tool to read any stored engine codes that have turned on the check engine light. This port is located behind the ashtray in the center console (most cars did not have this til 96).
If you have the 4 cyl engine, there is a service connector located under the dash on the pass. side. Inside the connector is what looks like a 2 wire plug should be attached. Take a paper clip, unbend it, and insert the 2 ends of the clip into the connector to 'jump' it. Turn the ignition switch to the on position (don't start the vehicle), and the check engine light will flash. Count the flashes, short flashes are for code #'s 1 to 9 (single digit code), a 2 digit code will be a long flash for the 1st digit, followed by a short flash for the 2nd digit. If there is more than one code, they will be separated by a pause. They will repeat so you can count them and write them down. Let me know what the code #'s are so I can help further. Curt
Posted on Jul 22, 2009
It's the neutral safety switch. Have your mechanic adjust it, or replace it if it's bad. For now try starting it in neutral instead of park or even try pushing the shifter up all the way (in park) while you turn the key.
Posted on Sep 21, 2009
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