Posts: 4
Joined: Thu Dec 07, 2017 12:44 pm
Delivery Date: 07 Oct 2014

Defective Coolant temperature sensor replacement

Thu Dec 07, 2017 1:15 pm

Hello .. best way to introduce yourself to a new forum is to gave information !

i have a 2015 Leaf whos waranty just tresspass (basic 3 years 60 000km)

suddunly, one day, all radiator fan kick in 100% while driving or charging
even if i did not ask any AC task ... car inverter dead cold...

then find other user that had to get the coolant sensor replaced...

part number is 22630 3NAOA and cost 30$us (up to 60$cad ! )

to change this sensor yourself , if your warranty cannot work ,
you need to access below the windshield washer fluid filling area:

1--unplug 12v battery ground (might prevent ECM dammage ? )
2--remove the charge port door , 4 little screws
3--remove the big plastic covering the radiator + charge port
, need to split the cover wings around the charge port to exit charge port door inge
4--to keep all coolant liquid in , ask for help while doing the
sensor swap
5--release coolant pressure , removing coolant cap
6--unscrew the old sensor and ask your partner to swap the
oring to the new sensor while you block coolant port with
one finger
7--install the new sensor WITH the oring and gently screw it back


Posts: 1
Joined: Wed Jun 21, 2017 9:25 pm
Delivery Date: 19 Jun 2017
Leaf Number: 424043

Re: Defective Coolant temperature sensor replacement

Thu Dec 07, 2017 8:39 pm

Thank you Yves; Well done and appreciated..!

Bill Hamilton
2013 Leaf S
Tsawwassen, BC

Posts: 309
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Defective Coolant temperature sensor replacement

Fri Dec 08, 2017 10:51 am

Welcome and thanks for the great writeup.

Posts: 1
Joined: Sun Apr 15, 2018 11:57 am
Delivery Date: 30 Jun 2014

Re: Defective Coolant temperature sensor replacement

Sun Apr 15, 2018 12:05 pm


I have a 2012 and the coolant sensor is not the same place. Side side (on the left / front view) but facing the rear of the care (instead of front).

Does somebody knows of to remove the sensor on a Leaf Gen 1 (2011 2012) ?
I can reach it but I can't remove it by hand, and there is not enough place for a 19mm box (1/2) or wrench.

Any help would be appreciated.
I hope there is another way than removing the radiator...


Posts: 1
Joined: Fri Jul 13, 2018 2:23 pm
Delivery Date: 13 Jul 2018

Re: Defective Coolant temperature sensor replacement

Fri Jul 13, 2018 2:35 pm

I’ve had the problem for two months.
I’m ordering the part now. Thanks for the info.
$60CAD + tax, no stock at dealerships.

Adding update.
45 minutes to put in.
Used a small screwdriver to push in a clip to release the socket.
Used a 3/4 inch socket by hand to remove and replace the sensor.
Cleaned off dust from all the parts and lubed all springs and hinges while areas were exposed.
Worked like a charm.

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