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How to Replace Camshaft Angle Position Sensor 2002-06 Nissan Altima L4 2-5L
How to Replace Crankshaft Position Sensor 2002-06 Nissan Altima L4 2-5L
Created on:
Tools used
Gloves
Socket Extensions
Paper Towels
10mm Socket
Ratchet
1. Removing the Camshaft Angle Position Sensor
Disconnect the wiring harness
Remove the 10mm bolt from the sensor
Remove the sensor
2. Installing the Camshaft Angle Position Sensor
Lace motor oil around the sensor o-ring
Insert the sensor into place
Tighten the 10mm bolt to the sensor
Connect the wiring harness
Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
Cam angle sensor on this two five Altima is located here atop of the head. It's got the connector on it, and it's bolted into the head. To remove it, start by disconnecting the electrical connector. There's a lock underneath. Use two hands, one to push the lock in or up to come off it. Wiggle it off. Place that aside.
There's a 10mm bolt underneath that's holding it into the head. Just sneak a 10mm socket, ratchet and extension in here. Can't quite get the bolt out. This hose is in the way. Trying to loosen it some more with my fingers. There it is. The bolt is out. Put that aside so I don't lose it. I'm just going to have a paper towel close by in case some oil comes out when I free this from the head. Just try to push on this end here where the bolt goes in just to break the seal. It's got an O-ring. Just kind of wiggling it back and forth. Here it comes.
Here’s the old cam sensor from our vehicle and a new one from 1AAuto.com. It looks a little different, but it operates in the same way. Has a single mounting hole. These connectors appear to be upside down from one another, but you can turn the connector in the car and just plug it in, so I'll show you that when we install it. But this should work for you and get your car back on the road.
I'm going to take our new sensor, and we're going to take a little bit of oil from inside the hole that it came out of, the original one. I'll put some of that oil on the O-ring. It slides in. Move the connector out of the way. Slide this into place. It's probably going to be a lot tighter because the O-ring is fresh. Push it in. Turn it down so it lines up with the bolt hole.
Reinstall our bolt. I'm going to get it threaded in with my fingers. It is a steel bolt going into aluminum, I'm going to cross thread it. Get it on the bolt seeded all the way down. Now I can slide the 10 mm socket and ratchet in here. I'm just going to tighten it down. It's a very small bolt going into aluminum. I don't want to get it too tight and break it. I'm just going to get it tight.
It doesn't want to turn anymore, so I'm going to stop. Take our connector. Just like I said, it can be turned a little bit. So now the lock is going to be on the top. It is keyed. It can only go in one way. Cam sensor is replaced.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Tools used
Gloves
Socket Extensions
Paper Towels
8mm Socket
White Grease
10mm Socket
Ratchet
Cloth Rags
Needle nose pliers
Engine Oil
Pick
1. Removing the Air Intake Hose
Loosen the hose clamp from the breather hose
Slide the breather hose off
Loosen the air intake hose clamps with an 8mm socket
Slide the hose off of the throttle body and air filter housing
Remove the hose
2. Removing the Camshaft Position Sensor
Remove the 10mm bolt from the sensor
Pull the sensor out
Disconnect the wiring harness
Remove the sensor
3. Installing the Camshaft Position Sensor
Lace the o-ring with engine oil or white grease
Insert the sensor into place
Tighten the 10mm bolt to the sensor
Connect the wiring harness
4. Installing the Air Intake Hose
Insert the intake hose to air filter housing and the throttle body
Tighten the hose clamps on each end with an 8mm socket and ratchet
Slide the breather hose on
Clamp the hose clamp with needle nose pliers
Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
Remove the upper intake tube. Start with this vacuum on here. Take some pliers, squeeze the clamp together, move the clamp down. Work the hose off. If you need to, you can take a right angle pic, work it under the hose and break that seal. Move the clamp down further out of my way. Loosen the two hose clamps. We'll start with the one near the mass airflow meter. Using an 8mm socket or a flat blade screwdriver. Loosen the one at the throttle body. This one is actually a 10 mm. If it got replaced, it could be a different size. Work the hose off the throttle body. And we're going to work if off the mass airflow meter. Move this hose out of the way and this one out of the way and lift it straight out of the car.
The crankshaft position sensor on this 2.5 Altima is located at the back of the engine, near the fire wall, near the bell housing for the transmission. So it's all the way right here. And there's the connector and the bolt connector. The lock part is right against the transmission. I'm going to remove the bolt first. Pull the sensor out. Then I can disconnect it. I've got plenty of harness here. Some oil may drip out, so I'll have a rag ready. Since you really can't see what you're doing, I kind of have to go in with my fingers and find the sensor, and find the 10mm bolt. And then try to guide a ratchet and extensions in there. It's a bit tricky. But once you get it, it'll go right on there. It doesn't take much torque to undo it. Not quite loose enough yet by hand, so I'm going to use just the extension, and the socket to finish removing it. There, I've got it out.
Looks like somebody already replaced this at one point cause it has a piece of tape over it, so the bolt didn't fall out. With that loose, now I can work on getting the sensor out of the side of the engine. Wiggle it back and forth. Pull it out. Now that we've got it loose, I can get to the to the lock. Now we need to disconnect the electrical connector from the sensor. Push in on this green tab to get some tension to it. Push it in and then, as you push it in, it actually pushes the senor out of the connector. When we've disconnected, our sensor is removed.
Here is our old crankshaft position sensor from our vehicle. This is our new one from 1AAuto.com. As you can see, it is identical. It'll operate in the same manner. It's with a single tab with the bolt hole. Same style connector. It's the same depth. Got a new O-ring on here. So we'll install that and get your car running again.
Before you install this, you can take a small amount of engine oil, or a little bit of white grease, and we're just going to put it around the O-ring so that it slides back into the hole okay. We don't nick the O-ring. Cause this O-ring's nice and fresh, it might be a little bit tighter. It doesn't matter if you get grease on the sensor cause the hole has oil in it anyways. Now I'm ready to install this. It'll be easier to install it without the connector plugged in. We'll plug that connector in after it's installed. Once you get it in place, rotate it a little bit. I'm just going to thread it in by hand.
So I'm going to cross thread. Take the ratchet. I'm just going to tighten it. It's a very small bolt. It's aluminum. I don't want to over-tighten it. So once I start to feel like it's tight, I'm just going to stop. With it installed, I can now reinstall the connector. The green lock is going to go towards the transmission. So I'm going to turn it this way. Once it clicks, it's locked into place. The crank sensor's installed.
To reinstall the intake tube, we'll start by feeding it into the engine compartment and placing it over the throttle body. Push this vacuum hose just out of the way for a second. Make sure that's seated on the throttle body. You can use a flat bladed screwdriver, or on this one, it's a 10 mm socket. Just bring it down until it feels tight. Make sure this is loose enough. Slide over. Slide the intake tube, it will squish down. Put it over the mass airflow meter housing. Hose clamp in place. Use a flat bladed screwdriver. On this side, it's an 8 mm. Tighten that down. Reinstall this vacuum hose. Take some needle nose pliers.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
ESA71379
In Stock
Product Reviews
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3.96/ 5.023
23 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
15
1
2
1
4
Does Not Fit 2003 Nissan Sentra GXE
Richard
March 23, 2017
Have to Force Bolt Into Hole On Sensor. Does Not Sit Flush and Plug is on End Instead of OEM at an Angle causing the Pigtail to be stressed. Will Be Returning Immediately.
Great Deals
AJ&E
July 14, 2017
You could never find a deal like this at your local auto part. Thank!
Aftermarket doesnt work!!!
Jeremy
July 28, 2017
I thought Id hit the jackpot getting both sensors for super cheap, the dealership wants $60/per for these. Lesson learned. This aftermarket part is too long, by just a little bit, and hits the crankshaft. Mine had a scuff mark on the end. This location is a real bear to get to, so save yourself some time and sanity and just go buy the genuine Nissan part. This part fixed my issue of hard starting for a couple days, then came back with a vengeance, worse than before. Genuine Nissan part fixed it for good.
crank/cam position sensor set
ANTHONY
September 21, 2017
Fit perfect one sensor bad called customer service. They were very professional sent replacement. Car performs great.
Fit and working
Tom
October 23, 2017
Dealership and part store wanted over $50 for a single one. I was able to change both crank and cam sensors for less than one.
Came within 3 days
Only thing that would have made it better is if someone would have installed them for me.
Parts have been great!
W
February 13, 2018
So far so good. Ive ordered 5 different parts for a 2005 Altima and a month later and no issues.
Fixed my intermittent shutting off problem
Ronald
February 23, 2018
Car was shutting off at odd times and often dangerous places, while driving and sometimes while idling. All research indicated the crankshaft sensor was most likely cause. On the Nissan Altima this sensor is a bear to get to. You need to be an octopus or contortionist to get your fingers on it. Some sort of flashlight either small enough to work down into the work area or with flexible neck (Snakelight from B&D) helps a lot. Due to a mounting bracket, (either motor or transmission, couldn't tell) I could not get a 1/4 inch ratchet with long extension and socket to go on the bolt holding in the sensor. I had to thin down the socket wall on bench grinder so it would fit over the bolt head. Could be the clearance between bolt head and sensor body is too tight rather than the suspicious motor mount, not sure, anyway it was tight!? After I got the old sensor out I had a hard time releasing the connector lock due to some old and hardened connector grease or something that had set up like epo
Excellent Product
L
July 18, 2018
Ordered online and came in about week, didnt know how to install it no experience what so ever. The how to videos are awesome shows the step by step install.
parts didn't work
A
February 8, 2019
I order parts for my 2006 Nissan Altima and the parts did not work not sure if it was the right part for my car, the ones that was in the were black and the one you sent me were brown. After changing the part the code is still coming up the crankshaft. Took it to the dealer and they said the part was no good.
M
March 30, 2019
Oredered two and one didn't work
Edwin
April 23, 2019
Great
Great product, perfect fit
C
August 7, 2019
Excellent product. Wish I started here and not buy the cheap stuff on amazon. Thanks!!
fidel
November 3, 2019
crank sensor is a little different but works
Runs great
Ralph
February 6, 2020
Thank you for quality parts and those helpful DIY videos, My car starts right up now and I think it runs stronger!
Sensors
Henry
August 5, 2020
Came pretty quick delivery. Looked like the originals. Went in pretty easy. Little frustrating at times only due to where Nissan decided to put the crank sensor way in the back pretty hard to get arm back there. Cam sensor was real easy right on top.
2 sensors. Great price and quality
Alicia
September 18, 2020
Had to replace on my 2005 Altima. One was easy to get to but the other was a pain to change. However they both worked well and starts every time now
Great
David
November 29, 2020
The part cane super fast was so easy to install on my altima and there was no troubles it was the exact match
Ermin
August 21, 2021
Only camshaft sensor worked properly. Had to purchase the original OEM crankshaft sensor from dealer.. Understandable, some electronic parts are very sensitive and require the original manufactured part...
Don't buy
Pablo
April 7, 2022
I bought this set of sensors for my 2006 Nissan Altima 2.5l crankshaft was not accepted by my car I installed it and engine light came on I called the customer service line and I was told to disconnect the battery terminal for an hour and light will go off. It didn't work so I installed the old crankshaft sensor but first I cleaned it up and the engine light is gone.
Rodney
May 16, 2022
I installed the sensor and got a print out . That the print out said get PCM reprogrammed hopefully that makes the light go outside
Perfect fit!!!
Oscar
September 5, 2022
Our 2005 Nissan Altima 4 cylinder was taking awhile to start up. Thought it may have been the starter or battery. Did some research and came across the videos. Installed the new sensors and now perfect start!!! Saved a lot of money on labor from what the shops were charging. Thanks 1A Auto, will definitely order more parts in the future
Abdallah
October 28, 2022
Works as intended.
GINA
August 31, 2024
Good parts will be ordering again when I need something.
Customer Q&A
If the sensor goes out, will it cause the car not to start?January 12, 2016
Travis M
10
Yes. When mine failed it had the same symptoms as if it were out of gas when trying to start.
January 12, 2016
Jacob M
10
Yes ,the car will not start
January 13, 2016
Gregory J
10
Good Morning Travis, the reason I changed my crankshaft position was because I had a check engine light. Drove the car to the mechanic shop and he diagnose it by placing a code scanner on the car. Mechanic stated that the code he pulled was to replace the crankshaft position sensor. Car would always start before replacing the sensor.. That's my reason for replacing the sensor..
January 13, 2016
E N
10
I had the same problem. Replaced sensor cleared codes ran good for awhile. Found the plug for the sensor was loose. Replaced the plug problem was solved. So if you have a sensor code check the plug replace both saves time and headaches.
July 10, 2018
ANTHONY D
Es el mismo censor camshaft y el cramshaft para un Nissan altima 2003? ??June 24, 2016
Hector P
10
Si
June 24, 2016
Lionel M
10
I don't know about Altima 2003. I bought it for a 2002 Sentra but it didn't fit on mine. Hope that helps.
June 24, 2016
Jeff M
10
Si, 2003 Altima 2.5 litros utiliza el mismo sensor para el sensor de posicin del cigeal y biela
June 24, 2016
Brian F
10
S , este sensor se ajustan a cualquier motor de 4 cilindros 2002-2006 Nissan Altima
June 25, 2016
Kevin D
We're is it located ?March 1, 2020
Charles G
10
Please view the installation video on our listing to see the location. Thank you for the inquiry!
March 1, 2020
Andra M
Why 2 sensors there is only one on the 2.5 engine?February 3, 2021
Curtis H
10
The vehicles that this part fits have 1 camshaft and 1 crankshaft sensor.
February 3, 2021
Andra M
Customer service
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Nissan is a registered trademark of Nissan Motor Co., Ltd. 1A Auto is not affiliated with or sponsored by Nissan or Nissan Motor Co., Ltd.See all trademarks.
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