Posts: 227
Joined: Fri Jan 20, 2017 9:23 pm
Delivery Date: 21 Jan 2017
Leaf Number: 424033
Location: Seattle

Re: Water Pump 1 failure on 2012

Sun Nov 04, 2018 9:15 pm

nice find on the alternate pump part number! will save people here lots of money over time i'm sure. And thanks for taking and posting some pics too.

will remember this for when mine eventually needs servicing.

2013 Leaf SL Premium
27k, 93% SoH 2/17 32k, 96% SoH 6/17
46k, 94% SoH 2/18 52k, 88% SoH 6/18
62k, 87% SoH 2/19 68k, 84% SoH 6/19

Posts: 3
Joined: Mon Sep 17, 2018 12:12 pm
Delivery Date: 17 Sep 2018
Leaf Number: 007299
Location: Hattiesburg,Ms.

Re: Water Pump 1 failure on 2012

Sun Nov 18, 2018 1:13 pm

I purchased our 2011 Leaf recently and the 12 v battery went dead immediately.I replaced it and had a million codes and that ev system failure light. After buying leaf spy and clearing the codes the P31E9 and light remained. After looking through the forum I was able to go directly to the cooling pump and diagnose it easily. Many thanks to everyone's posts and especially to etunnel for the great post. I bought the same pump on ebay for $126.00 and easily installed it and it worked immediately and turned out the ev light. Only problem was that one of those stupid hose clamps broke while still on the pump making the job a bit longer.

Posts: 1
Joined: Sat Dec 01, 2018 7:24 am
Delivery Date: 01 Jun 2016

Re: Water Pump 1 failure on 2012

Sat Dec 01, 2018 7:34 am

Wow. I followed the instructions set out by etunnel and got my 2011 Leaf fixed in about an hour and a half! I paid $125 for the part from an ebay seller, the pathfinder version of the pump, it just slides right out of the bracket as etunnel said. I bought a siphon pump from autozone for $6.

All in this fix cost:
- $20 for LeafSpy Pro (to verify issue)
- $125 for new pump
- $6 for siphon pump
- 1.5 hours of my time

Considering that the cost to have it fixed by a dealer is $1,100 I would say that a good hourly return! Weird ticking sound is gone, error codes are gone, everything is running great.

Thank you etunnel for your insight and great photos. Anyone else, if you have this issue with your leaf and you have a pair of channel lock pliers to remove the clips, this is the easiest way to save $1000 you'll find this year.

User avatar
Posts: 9644
Joined: Thu Apr 22, 2010 10:10 am
Delivery Date: 05 Jan 2011
Leaf Number: 0213
Location: Garden Grove, CA

Re: Water Pump 1 failure on 2012

Sat Dec 01, 2018 8:14 am

Yes, excellent post etunnel! Haven't had to do this (yet) but I'm Downloading you content so if it ever becomes unavailable I still have it.
2011 Blue Ocean SL with 83,000 miles
2015 pack on 12/30/15
Tinted windows
Bosch AGM 12v
Ecopia 422+ tires
L1 EVSE upgrade
FIAMM horns
Superbright LED lighting
2013 sun visors
LED shifter
Heated seats
GT-R map lamp lenses
Altima illuminated door switches

Posts: 1
Joined: Sat Oct 19, 2019 12:56 pm
Delivery Date: 19 Oct 2019

Re: Water Pump 1 failure on 2012

Sat Oct 19, 2019 1:03 pm

av8or wrote:
Mon Jun 26, 2017 1:35 pm
I just popped the hood and checked to see which pump is making noise.

When car first starts up, water pump comes on at normal speed after a few seconds. There are no warning lights on dash at this point. Then about 15 to 20 seconds later, the yellow warning light comes on, and the water pump RPMs increase.

The pump making the noise is on driver side under the battery - I believe that one is OK.

The other pump, a small one on passenger side, is making no motor noise. It does make a gurgling sound, and some bubbles are appearing in the reservoir above it. I pulled the power plug for the pump and noise didn't change at all, so it is not running at that point.

Both reservoirs are full, and I am not seeing any leak issue.

Hi, Im currently also hearing more noise of the driver passenger side pump. Wondering why your pump nr 2 was fine when it makes more noise? Would the defect pump (number 1) make the working pump louder, as it might not be working at all?

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