D4 green light flashes
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1998 Honda Prelude Question: Instrument cluster is blinking d4 speedometer isn't workin and check engine
Aggieland Automotive (9 Answers) , College Station, TX - (979) 404-2728aggielandautomotive November 24, 2013, 18:50Enthusiast
The d4 light flashing is the warning light for the transmission .
The warning light along with the speedometer not working usally indicates that the vehicle speed sensor is not working .
The speed sensor is located on the top of the transmission and mounts on vertically .
Answer #2ziptie12 November 24, 2013, 23:13Master
Have scanned for codes , to avoid wasting money on unnecessary parts. May be a wiring issue.