Flashing D4 on the dashboard on 1991 Acura Legend

Flashing on the dashboard. WHat does this mean?

by in Freehold, NJ on March 20, 2009
2 answers
ANSWER by on March 20, 2009
ECU monitors transaxle operation. ECU contains a self-diagnostic system which stores a fault code if a transaxle electronic control system failure or problem exists. If a fault code is stored, ECU will turn on and blink "D4" light on instrument panel.
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ANSWER by on July 24, 2009
Mine did this right before my speedometer went out.If the speedo goes soon it is your speed sensor. I had this problem and found a speed sensor repair kit online. The kit cost $75.00 plus labor was much cheaper than a new speed sensor.
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it just started today and I dont know how to get a code.