The D4 light flashing means that the transmission has detected a problem and most likley set a code for it. Joe You will need to get the code to determine the proper repair. The speedometer quit working and the D4 light flashes on my 1995 Odyssey. Jump to Latest Follow 1 - 8 of 8 Posts. As the speedometer is not working I suspect that it is a vehicle speed sensor code. You most likely have a problem with one or two speed sensors on that vehicle. More than likely the Speed Sensor has gone bad since the D4 light starts flashing! (i do not mean digital!) She idled at around 1500 rpm's cold and dropped to 1000 once warmed up yet bounced around from there. If a 97 Honda Accord europe spec D4 light is flashing and the speedometer needle does not work what is the problem pls help Re: D4 Light Is Flashing by shamecurls ( m ): 4:58pm On Nov 02 , 2014 The Best advice is to run a scan on the transmission or have a mechanic thoroughly look around the transmission mechanism and fluid also, if you know where i can get a new one. My symptoms that were still left were the rpm's fluctuating. D4 blinking and the speedometer one day does not move One day moves like crazy. I noticed that the ABS light was blinking as well as speedometer not working. If your D4 is blinking, then check ur gear sensor. The speed sensor is located on the top of the transmission and mounts on vertically . the D4 light is on because the torque converter in the transmission is not locking up when it is supposed to. the control unit for the transmission looks to the signal from the vehicle speed … Its fine, the speedometer is now working and the D4 light that was previously blinking has stopped. LESSON: if the speedometer sensor is bad, it could cause the D4 light to blink on the cluster. The d4 light flashing is the warning light for the transmission . Speedometer not working and "d4" is blinking. I have had the ABS light to do this before and after drying out would go off like it should but have never had speedometer problems. The warning light along with the speedometer not working usally indicates that the vehicle speed sensor is not working . My rewire said its the gear switch but, its not the gear switch but the speedometer sensor. Also! J ... the the d4 light on my intrument cluster is blinking.... please help if you have any idea what is going on.. im thinking the overdrive sensor and the vss (vehicle speed sensor) is fault. Thanks. At first stop light I cut the bike off and restarted to see if that would re-boot the ABS light, which it did not. Hi, Well with the D4 light blinking and the speedometer not working. The speedometer will not work or be erratic or get stuck! my D4 light is blinking after I start driving, also my speedometer stopped working, my trip stopped working, and my odometer stopped working all at the same time. that problem is caused by the problem with your speedometer. Any suggestions besides taking it to a - Answered by a verified Mechanic for Honda We use cookies to give you the best possible experience on our website. I figured this would of solved the flashing d4 light yet it still flashed even though the speedo was now working. Here is how it works. Any ideas? The speedometer is run electrically. Already replaced the speed sensor and still the same. I hope this information is helpful to you.