Neutral light was blinking on dashboard cluster panel, scan and p2721 code?

So, this is a circuit error which can mean there is a connection issue, or the transmission pressure pump had gone out which affects the circuit.

The P2721 code on your 2019 Honda City refers to a problem with the Pressure Control Solenoid "E" Electrical circuit.

Here is the wiring diagrams so confirm the connection is okay or needs repair.

This guide can help you with the testing:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with. It is a simple one wire connection to the TCM.

Thanks, I will upload the wiring diagrams and will check through. Will keep you all updated.

Could you send me a photo of the transmission pressure pump?

Sure, here is how to replace the fluid pressure pump. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

Thanks

I went through the harness and oil pressure switch all seems to be okay. Any other ideas. I'm thinking may be an issue with the TCM.

Yes, it can be the TCM that is having an issue since you have checked anything else. Here is the location and how to change out the TCM. Check out the images (below). Let us know what you find.

Do you all have the wiring diagram for the 7 wires transmission jack to the valve body , and wires pacific voltage

I do but the site is having issues, can you upload an image of the connector so I get the right ones to you?

7 wires jack that Jack's into the valve body front of jack
Light green
Light grey
Light brown

Back of jack
Dark green
Red
Dark Grey
Pink

Looking for the wiring diagram+ pinouts an voltage specs of each wires.

Below is photo provided

Sorry it looks like the site is having an issue, I will contact the owner and let them know. I cant see the images. So I will need to get back to you.

Ok looking forward for your response.
Which site do you use to get the wiring diagram an pinouts for this said car.

Yep, this is what we use for wiring diagrams

https://my.alldata.com/

They are a good resource.

Ok Alldata has for honda city cng gm6 version?

Yep, it is the same as a Honda Civic.

On the 7 wire jack to the valve body could you let me know which color supposed to be the 12v feed wire, with key on no wires showing 12v. Or does it carry a 12v or not.

They don't give us a connector view so you will need to see the color of the wires and check them against the transmission wiring diagrams above. Let me know how it goes, this guide can help you with the testing:

https://www.2carpros.com/articles/how-to-check-wiring

Please let us know what happens.

On the 7 wires valve body jack key on checking for voltage only 1 wire just have 4.99v all others 6 wires 0v. Just asking ain't a wire suppose to show 12v .

Did you find the color wires on the wiring diagrams above?