2019 honda city, Neutral light was blinking on dashboard cluster panel, scan an p2721 code came up which is solenoid D issue on the transmission. Replaced complete new original Honda valve body, Neutral switch, valve body wire harness, filters an oil. After such Neutral light still blinking and code not clearing an also TCM not resetting. To note car running great all gear engaging properly no issues. Any help will be appreciated. Thanks.
Realize you need to have a pro mechanic like me with a high-level scan tool. Reset all the adaptations. Modern cars. You can't change a bunch of parts without resetting stuff. Pray it's that easy and that you don't have a wiring or a TCM problem. I'm only a mechanic with high-level scan tool is going to be able to reset stuff and tell you if there is another problem because it's really complex when you're dealing with shifting and computers on a modern Honda
OBD Code P2721 - Pressure Control Solenoid "D" Control Circuit High.
You already asked about this problem back in 2024, and received an answer from Scotty.
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Sounds like you replaced everything there is to be replaced. Only logical conclusion ... ghosts.
Thanks for responding .
Thanks
Good day, 2019 honda city cng version gm6 . Gear icon light on dashboard is blinking N an S is over the N blinking.
OBD Code P2721 - Pressure Control Solenoid "D" Control Circuit High.
Replaced : genuine honda new valve body with internal harness, range switch same issue.
Replaced the entire newly built transmission, complete engine + transmission harness with under hood relay box and ECU, after all this same issue light still blinking but otherwise the car runs good no issue all gears changing. Any help will be appreciated . Thanks