Subaru Camshaft Position Sensor P0340 and P0341 Testing and Replacement

Today we show the steps involved testing and replacing a Subaru Camshaft Position Sensor; P0340 and P0341. Both P0340 & P0341 deal with the cam position sensor. P0341 may trip if there's a problem with a camshaft sprocket and/or if the timing belt is dislocated. This particular vehicle is a '10 Impreza non-turbo. Ending Music: Turn On by RW Smith.
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P0340 - Camshaft Position Sensor A Circuit Bank 1 or Single Sensor
P0341 - Camshaft Position Sensor A Circuit Range/Performance Bank1
Note:
This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, use safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. If you don't think you can perform the job then be smart and don't. Carsntoys is a member of the Amazon Influencer Program.
Publication, reproduction or distribution of this film is strictly prohibited.
Subaru Camshaft Position Sensor P0340 and P0341
• Subaru Camshaft Positi...
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[@o.c.stiggs5377]

Very helpful. My daughter and I played this vid while working on her Forester yesterday.

[@hksoundpro]

Good presentation. When testing resistance, check your leads before making any measurement. Touch the red and black probes together. Your meter should read below 0.10ohms. Unplug and reseat the leads in the meter. Helps to verify that you aren't being led astray by continuity problems with your test leads.

[@jhonnyhayes8366]

This was the perfect demonstration of what I needed to do for my 1996 Subaru Legacy, which was starting sometimes, and then not starting other times. Ran the codes and then watched this video. Sensor was found to be good and and everything tested out good, so I tried to wiggle the sensor and, voila, it was loose. So I snugged it up and it starts up every time now. Saved me a trip to the shop and not having to hear my mechanic try and sell me something I didn't need.

[@CarsNToys]

Glad to help! Keep her running.

[@djstatyk1540]

Dude! That might be my issue

[@chrissyfromgary]

When I tell y'all I read this comment after my car stalled out and wouldn't even start at some point for code p0340... Found where the sensor was because of this video... Just one fingertip touched the wire before it just fell. IT WAS NOT CONNECTED ALL THE WAY! I hope the same thing happens for anyone reading this comment, cuz I don't have money for this Subaru for another 10 days bruh! 🙌🏾🙌🏾🙌🏾

[@generalcanby5847]

Top Shelf Quality Video. Clear and thorough. Professional and helpful

[@scottbenjamin6546]

On my '07 Imprezza it helped to remove the coolant tank (no tools needed) and the battery, for room to fit my hands and wrench in that small space. Saved a lot of cursing! The manual requires disconnecting the battery ground anyway, before unplugging ANYTHING.

[@ronnieboucherthecrystalcraftsm]

disconnect the negative terminal = subaru manual .= good point .

[@raquelromano5310]

Thank you so much for this video! I have a 2007 and this video likely saved me a few hundred bucks. I bought a decent multimeter and followed your instructions. I tested and the part was fine, the continuance was fine… the part must have been loose or the wires not seated because after putting it back and tightening everything, the error cleared and everything is working as it should. A mechanic might have simply replaced the part, and they definitely would have charged labor, even if just to tighten the bolts and connection.

[@jimgordon3206]

Very good. Very informative and helpful. Thank you. You and ThePracticalMechanic are the most thorough videos.

[@CarsNToys]

You are welcome!

[@sankey912]

Great video!! What could the explanation be when both P0335 and P0340 come on together? Timing issue, sensor issue, or something else? Car cranks, does not start, wait for a few hours and it starts instantly.

[@byrongallup2894]

Great video. Very informative and great camera work so we can see what he was explaining.

[@CarsNToys]

Thank you. Appreciate the feedback.

[@scott-he1yw]

Good break down, but the best way to look at this is with a scope. You verified the ground with your meter, which your best bet is to always go to the battery for best results. But a scope will verify if the ecm sends a bias voltage to the sensor and will pick up if there are missing or damaged teeth on the cam sprocket. Also testing the ohms across the sensor can give you false readings due to temperature. Also when testing a circuit its best to load test them by loading the circuit typically by a non led test light to verify the circuit integrity. By no means am I trying to knock you, but just be aware of other issues that can be present

[@N3O9Pr]

Thank you for making this awesome, detailed, and informative video. It saved my butt. Thank you!!!!

[@CarsNToys]

Happy to help.

[@13thvarebel16]

THANK YOU! Excellent video, covered everything I was looking for in answer to my car's issue. Successfully fixed it 🙌🏻

[@garyschwalm4842]

Awesome job on video and explanations. Certainly appreciate it.

[@am6066]

Isn't the 'wifi' symbol actually a speaker symbol noting when the leads are touched together, the continuity is verified by the 'beep' sound; very valuable when troubleshooting when you cannot see the meter.

[@brentridings]

Only thing I would add is you really need to do a continuity check from cam plug to the ECM connector. To verify no breaks or high resistance in that line. Otherwise good video

[@chrispalmer1255]

Where is this? I got a P0340 and did all the things in this video including replacing the cam position sensor but it didn’t fix the problem

[@jonathanbywater2063]

Superb. Just what I needed. Thank you.

[@devinhughes7803]

My wife just freaked out when this code was thrown.... Thank you so very much for this, I don't know anything about these box engines hahaha

[@golagha1959]

I had code P0341 on my impreza 2013 base model. The mechanic replaced two sensors on the driver side. The engine light came on after a few months. I went back to him and he switched the two sensors with the other side. He told me if it still shows up, he has to open it to see if there are other issues. A few days later the engine lights came on again, but and after a day or two the engine light disppeared. I was told it is how sensors reset themselves. For a few days there was no problem. I took the car as a trade-in for a leasee car. I wonder and regret if I shoud have kept the car a bit longer in the hope of hanging on to it. Now I have to make monthly payments for the car that I leased. Cars are expensive these days.

[@joshuaertman7571]

When testing the harness, should my battery be connected?

[@tdublove9558]

Great information 👍 you just saved me time and money

[@CarsNToys]

Great to hear!

[@subiemad6073]

When you test the wiring harness does a battery need to be hooked up to the car? I’m not getting a beep testing the harness, but the car doesn’t have a battery in it right now if that affects the reading? I’ve just been starting the car with a jumper pack and running off the alternator when I’ve been testing the car if that affects anything. I’m trying to diagnose a p0390 (camshaft position sensor B circuit) getting a good reading off the sensor itself

[@ARMA2Sureshot]

Excellent Video, it was very helpful to replace the sensor!

[@CarsNToys]

Thank you.

[@victorenriquez9668]

When you tested continuity was the car set to "On"? Was the battery connected completely again?

[@ronnieboucherthecrystalcraftsm]

i had this code and put a new sensor all good = timing belt ! damaged and tensioner may be damaged ? now to tear in down and see !

[@EngrMdMahfuz]

Really imformative and helpful video. Great jobb.

[@ala4857]

clean the cam position sensor I used crc mas cleaner. this is do to the fact that this is a magnet

[@tomasraubys3303]

great video! very clear and informative! in my situation there is no ground in connector. what should be the next steps locating the problem? my vehicle is forester 2004.THANK YOU!

[@raysonhirakawa2943]

Check the relay for the sensor

[@austinmatthews606]

I can’t get any reading at all. Nothing happens. Meter is good. Should it at least read 0 or is it bad if you don’t get any reading?

[@majoroverkill1376]

Question for you. My 1990 Subaru Legacy cranks and wont start. The cam sensor tested at 1.4 K Ohm and the Crank sensor at 1.075 K Ohm. are these OK?

[@bluepiggaming204]

great video

[@PAiN46k]

If I have less then 2.1 ohms is the sensor is bad?

[@GenXKid26]

Good stuff bro! Having issuses with mine and believe the issuse us the timing. Before I jump rugjt to that I want to test out everything first.

[@kadenfender957]

My engine is really dirty.. if I clean the sensor, can that possibly fix the problem?

[@fredg916]

What about P000D? How do u diagnose?

[@duckiedx]

I’ve learn a lot from this video! Thank you.

[@CarsNToys]

Glad it was helpful!

[@fieldsofomagh]

That multimeter sure looks a handy item for the toolbox.

[@CarsNToys]

Yea, they're terrific.

[@midnightrunner684]

I love the Multimeter

[@FynrDzynr]

Be aware driver side is different in right hand drive versions. Should say looking into engine bay from the front the cam angle sensor is on your right

[@gizzyguzzi]

no. the standard is to say left and right. and it is based on sitting int he car. So left is driver side on a left hand drive car, but is always the left

[@GarryHuta]

Anyone know the size of the bolts? I need mine replaced... Thanks in advance

[@nitro1990]

Whats the reading if its broken?

[@trevorthorson1484]

Would have liked u to also add for the p0430 the timing belt itself may be broken like my 01 outback

[@robinadahl7841]

How to adjust the shaft if it got out of sync due to heat?

[@StraightPineAcres]

Came here because I need to get to that variable control valve solenoid bolt there.... I’m thinking I can unbolt the cam brackets bolt and the other bolt that you have shown here... I currently can’t get to the bolt because of the cam bracket.

[@markbeck8456]

Currently in the same situation here. I did end up loosening the cam sensor bolts and was able to pull it out enough to get a 10mm wrench on it. Did you get it yet?

[@StraightPineAcres]

@@markbeck8456 I ended up dremeling off that elbow that sticks out. I determined there’s still enough material to hold it secure. Nothin was moving for me and I was nervous to break it

[@markbeck8456]

@@StraightPineAcres Thats a great idea. I couldn't believe how incredibly inconvenient that setup was lol. What were your symptoms beforehand and did you have a p0082 code?

[@StraightPineAcres]

@@markbeck8456 I had p0026 and p0028. I think you meant the 28 one right? Yah. Haha

[@markbeck8456]

@@StraightPineAcres I had those 2 initially when tested last year, but we just tested it a few days ago and i believe it was a p0082? It idles fine but when driving, it stutters then goes, stutters, goes.....

[@alonsoleonm7]

any differences between can and cam sensors or are same? thanks

[@harrym1027]

Can sensor is for the control area network. Cam sensor is for the cam shaft my dude

[@kalebfriend9519]

Why is the word “block” keep getting shut out?

[@rohitmehta6684]

What is the manufacturer part number if I want it to buy from Amazon

[@CB7ism]

What year and model are you working on? 2010 IMPREZA

[@CB7ism]

Yes

[@yanickprout1466]

Im getting p0365 code and cant find the problem

[@helalbouhasson3696]

Good job🤙🏻

[@CarsNToys]

Thank you

[@alvaroblacidoramirez8314]

Hi my friend I have the error..... En the odometer... ER SP

[@cpmethod2]

i can't get the sensor out of the engine bay. I get the screws undone. It just stuck in there. Not sure to pull or to slide out.. nothing works...

[@scottbenjamin6546]

Same here. I gave it a shot of WD-40, then tapped with a hammer (with a piece of steel rod between so the hammer didn't hit anything else!) and it slid right out. Many gentle taps are better than a whack!

[@scottbenjamin6546]

On my car it helped to remove the coolant tank (no tools needed) and the battery, for room to fit my hands and wrench in that small space.

[@ghostgarage3888]

my sensor schow me 0.933 is this bad ?

[@alvaroblacidoramirez8314]

And some times the velocímeter go to 0 km

[@Kevinpol83]

What about p0011?

[@andykane439]

P0390 ??? Just came up

[@P80baby]

whats up bro. . i gave you a message on fb. .

[@undergroundlegend198]

That is a crankshaft sensor otherwise the code would be p0390

[@gizzyguzzi]

I'm not sure why you took out both bolts, for the sensor AND the housing. Seems one or the other would do.

[@subiemad6073]

When you test the wiring harness does a battery need to be hooked up to the car? I’m not getting a beep testing the harness, but the car doesn’t have a battery in it right now if that affects the reading? I’ve just been starting the car with a jumper pack and running off the alternator when I’ve been testing the car if that affects anything. I’m trying to diagnose a p0390 (camshaft position sensor B circuit) getting a good reading off the sensor itself