Leaf PTC Cabin Air Heater

Nissan Leaf/e-NV200 drive stack topics
Post Reply
User avatar
cnstrct
Posts: 18
Joined: Fri May 30, 2025 3:20 am
Has thanked: 11 times
Been thanked: 5 times

Leaf PTC Cabin Air Heater

Post by cnstrct »

Is anyone using the leaf PTC cabin air heater? I have found info for the coolant heater but have been searching high and low for details to control the air heater with no luck. This one is out of a 2019 part number 27143-3NK1B
Screenshot 2025-12-30 at 10-24-43.png
Screenshot 2025-12-30 at 10-24-55.png
Screenshot 2025-12-30 at 10-25-04.png
arber333
Posts: 3795
Joined: Mon Dec 24, 2018 1:37 pm
Location: Slovenia
Has thanked: 166 times
Been thanked: 412 times
Contact:

Re: Leaf PTC Cabin Air Heater

Post by arber333 »

cnstrct wrote: Mon Dec 29, 2025 11:30 pm Is anyone using the leaf PTC cabin air heater? I have found info for the coolant heater but have been searching high and low for details to control the air heater with no luck. This one is out of a 2019 part number 27143-3NK1B
....
Could be this link? He is also refering to LIN protocol for "dry" heater...

https://ev-olution.yolasite.com/nissan- ... roller.php

Some more info in video...
User avatar
cnstrct
Posts: 18
Joined: Fri May 30, 2025 3:20 am
Has thanked: 11 times
Been thanked: 5 times

Re: Leaf PTC Cabin Air Heater

Post by cnstrct »

Thanks arber333, looks like you're right, they do refer to a dry heater with separate ino file, thanks!
UPDATE. I am also sharing controller code for "dry" PTC heater (from LEAF made after 2013). It was tested and reported as fully working. Please only use it if you using PTC in custom project and not in LEAF vehicle. As LEAF made after 2013 has two other slave modules connected to LIN bus.
https://ev-olution.yolasite.com/resourc ... r_V1.1.rar
Dddrewski
Posts: 1
Joined: Wed Jan 07, 2026 12:58 am

Re: Leaf PTC Cabin Air Heater

Post by Dddrewski »

Hello. I am new to this forum and seem to have hit a wall implementing control for the Leaf PTC Cabin Heater. Were you able to get this working? I get similar LIN bus messages from the heater and it doesn't heat up.
User avatar
cnstrct
Posts: 18
Joined: Fri May 30, 2025 3:20 am
Has thanked: 11 times
Been thanked: 5 times

Re: Leaf PTC Cabin Air Heater

Post by cnstrct »

Sorry @Dddrewshki I haven't had a chance to try it yet.
Post Reply