Transmission, blinking green warning light on the D

2004 HONDA ACCORD
185,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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LEONPONCE
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  • 2 POSTS
Replaced OEM transmission two times with two different transmission car still has the blinking green light on the D I have also replaced ECM shift solenoid and input speed sensor.
Nov 27, 2021 at 10:43 AM
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SQM
  • ✓ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

The flashing D in the gear selector means that the transmission control module has detected an error. The flashing light means there is error code(s).
It could be a number of different things.
A good first step would be to scan the vehicle and retrieve those transmission codes. While scanning you will have to make sure that the scanner is capable of retrieving transmission codes.
Knowing the codes can help with the diagnostics.

Please let me know of any questions.
Thank you.


https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
Nov 27, 2021 at 7:59 PM
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