P0340 Ford Code - Camshaft Position Sensor Circuit Bank 1 Sensor 1

I changed both sensors but the code still comes up. now i am getting multiple misfires but only after the engine is warmed up. any ideas?

What model and year is your Ford??

I have a 2004 Ford f150... I week ago i went to the store and when i pulled into the parking lot it make a very loud knocking noise. When I gave it gas and turned the corner it stopped. parked the truck and checked fluids and everything looked ok, nothing leaking. Today it happened again when i was pulling into another parking lot... This time the transmisson light came on. Did a check with my computer thingy and pulled code P0340... What should I do?

For the P0340 code you have to replaced the Camshaft Position Sensor,

IVE ALREADY CHANGED THE SENSOR AND IT ONLY ACTS UP WHEN THE MOTOR IS WARM. ANY IDEA ON HOW TO FIX IT?

What model and year is your Ford?

Did you ever get it fixed??? My mark lt is doing the same....just replaced camshafts and sensors and still shakes really bad after i run it for a while it also throws the same codes over and over again I'm not sure what to do anymore..... Ford took it in and couldn't find anything but I'm taking it back again hopefully they can fix the problem this time

I have a 2004 5.4 f150. I started stalling at stoplights yesterday. It's throwing P0340 and P0012. I'm mechanically inclined. Is there something I can do myself before going to a dealer? I would at least like to be educated before I walk in their blind?

Iv'e seen that sometimes when you pull the p0340 code it's sometimes not your camshaft sensor at all. At least with the mustangs it is usually your alternator altogether. Be sure to check your alternator as well as your camshaft sensor.

Thank you for the information!!

oops to late

I have a ford 2004 f150 5.4 v8. Had p0340 codes changed both sensors and still wont start. Any ideas?

Hello Mr Lopez I was wondering if you got your Mark lt fix because I'm having the same problem with my Mark lt.

When cranking the engine does the tacometer move, if not your crankshaft senor connection may be lose or disconnected. Ford has a TSB about P0340 error code on the web. stating that it could be an alternator over charging A/C current

Thank you for the information!!

I'll try to add the bulletin to the code page.

I have changed my sensor twice now, but check engine light with P0340 code still shows up.

What model and year is your vehicle? I can check if there are any bulletins or extra information from the factory.

1997 Ford Mustang (base)

Unfortunately, I couldn't find any bulletins or recalls.
Other items that I have seen that could also cause the P0340 are the following:
- Bad spark plugs
- Spark plugs wires
- Starter

Those are not very common, but if you haven't replace the spark plugs and wires lately, you could start with that. Make sure you use factory parts.

They have not been changed in awhile. I may need to start there 1st. Thank you

I hope that fixes the problem. Again, make sure you use factory parts.

I have a 2014 ford focus 2.0 im having a problem with the camshaft sensor i change both of the sensor and check engine still comes on giving me the same code p0369 p0365 and code p0340 any idea what to do?

I have a 2003 Ford Ranger XLT that my engine light came on and the code it gave me was P0340, it need a oil change and so I did that, is there anything else that might cause that code to show up?

I keep getting the camshaft sensor bank one sensor 1. I have replaced both and swapped each other and still get the code. My 2006 mustang gt runs great until the code comes up, any ideas?

What size is the engine on your Mustang?

2007 ford escape .V6 this motor as one cam senser. I replaced senser and small 2 pin plug .i soldiered wire and put heat shrink .the code came back in one short drive . but it now comes and goes .im refering to the code. The po 340 code.where should i look next. Engine seems to run ok.

Unfortunately other than the Camshaft Position Sensor I have not seen any other component triggering the P0340 code. I've checked a national database of repairs for your model year, and other that the Camshaft Position Sensor, the Crankshaft Position Sensor was replaced to fix the problem.

I had 2011 ranger xlt 4x2 manual transmission,
Can you help me fix my problem, I already change 3 sensors related to the code problem but after changing it few days later the check engine sigh came back and I had a hard problem in starting my engine I had to pump my fuel pump in order to warm up and start up.. your comment is very appreciated. thank you and godspeed

I checked a national database of repairs for your model year, and other than the sensor there are no other components setting the code. There are a couple of instance where the problem was the sensor connector. My only advice is to check the sensor connector, and if the connector looks good, then you have to check the wires from the sensor to the Powertrain Control Module (PCM). Do no replace any other parts before checking the wire. Since you mention that you pump the fuel, make sure you have a good fuel pressure.

I consult my unit in ford shop and they say I had to replace my PCM. should I change my computer box? I had a feeling that my problem is in wiring but Im not a mechanic though. it just a wil
d guess. hehe

car is jerking lack of power , run better with gas pedal down seems like pedal is hard to push . Changed crankshaft position sensor at first it was better . also sayes better after warms up and some days not has bad.

Hello Mike. What model and year is your Ford??

Where is bank 1 located on a 2015 mustang 5.0 premium I'm getting 2 codes one is p0340 and p0345 any tips?

Bank 1 is Right Side of The Engine Cylinder Head. Bank 2 is the Left Side.

For the P0340 "Camshaft Position Sensor Intake" Right Side

For the P0345 "Camshaft Position Sensor Intake" Left Side

What's the hose connecting to it

Having trouble with this part can you describe how to change this part out please

You just to to remove the bolt that holds the sensor and pull out the sensor.

Which hose? the image I posted are for the Camshaft Position Sensors. The blue parts are the sensors, the pink are the connectors and the yellow the wires.

I have a 2008 f150 5.4 Triton. when it warmed up it starts to knock and want to stall, i step on the gas peddle and it goes away for a bit. I was told that if i change the oil to 10w 30, that it will go away cause it was over heating. I changed the oil and it worked for about two yrs, it did have a little knocking but nothing to bad until now. I did not get a check engine light on. I put my code reader on and it gave me the code P0340

You may have two different problems, the knocking noise and the P0340 code.
For the P0340 code the most likely cause is the Camshaft Position Sensor Bank 1 (Right side of the engine of your 2008 F150 5.4)

I have a 2009 Ford Mustang GT and I'm having the same issue. I already replaced both cam position sensors and checked the alternator. can you help? Thanks

The Camshaft Position Sensors are by far the most frequent problem for the P0340 code on the 2009 Mustang, followed by the alternator and ignition coils. I checked a national database of repairs for your model year, and I found a few cases where the problem was a dirty throttle plate, and the other one was just an oil change.
Do you have any other symptoms besides the engine light?

Thanks for getting back to me. I have replaced both camshaft position sensors. I had the alternator checked at a local parts store and they said it was good. I wonder if I need to replace the crankshaft sensor? I read that this could also cause the problem. I haven't checked the starter yet but No other symptoms besides the check engine light.

It has code P0340 and P0344.

If you have both codes, then the Crankshaft Position sensor may be the problem. Here are the stats for repairs on the 2009 Mustang with both codes.

I Have a 2005 Ford F-250 super duty, i replaced the sensor i also did an oil change because the truck had been sitting 9 months, i am getting this code after clearing it twice. I will be checking on how to fix it myself before i take it to the dealership or my mechanic. Every where i look i cant seem to find information on the f-250 super duty.

Let me check if I can find more information, what is the engine size of your F250?

5.4l V8

i am almost positive it has 2 sensors one on each side. the one i replaced was on the left side (passenger) side of the vehicle,

Is the engine running rough? If it is, then you may have a bad ignition coil, which will also set the P0340 code.

If the engine is not running rough, the camshaft position sensor is by far the most common problem, but there is a factory service bulletin that suggests the alternator could set the P0340 on F250 with 5.4L engine. I recommend checking if the alternator is charging correctly.

For your vehicle the Camshaft Position Sensor Bank 1 (P0340 code) is the Right Side of the engine (Passenger Side), it looks like you replaced the correct one.

Thank you, I appreciate everything you have told me. My mechanic to look at it on tuesday. the alternator is not the problem battery is good and its charging at 13.22.
Thanks again for all of your help.

I have an 05 ford explorer XLT 4.0 SOHC K-flex, was driving along running perfect then suddenly died, managed to get it running but had to use one foot on the gas and one on the break to get back home, scanner shower P0340, if running as long as rap up the rpm its fine but won't idle both cam and crank sensor tests good, however engine running scan I receive multiple TDC's e.g. P0340, P2198, P1101,P1703,P1780,, P2196, P2271,P0121 (though running through my dealer manual tests for the cam sensor (VR type) it fails part D29 test, only the return signal (-) shows above 10k ohm, the rest nill,... all other voltage, continuance, and resistance tests pass on the sensor and between the CPM and PCM connectors,.. I'm thinking the short is in the PCM itself (?) (battery and alternator have been tested) Would this be a correct assumption based on this info?

I doubt there is a short in the PCM, it's possible, but not likely. In most cases you wouldn't be able to start the engine with a short in the PCM.

The P0340 for the camshaft position sensor can sometimes be triggered when the engine stalls, but it's not necessarily the cause of the problem.

Most of the codes you got are related to the Oxygen sensor, which shouldn't cause the engine to stall.

The only code that I think could cause the symptoms you describe is the is the P1101 for the MAF.

I suggest starting by checking the air filter box and MAF. Make sure there is no debris obstructing the air flow and clear all the codes to check what codes come back first.

P0340 Ford Code - Camshaft Position Sensor Circuit Bank 1 Sensor 1
Read more: https://www.autocodes.com/p...

P2198 Ford Code - Oxygen Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1
Read more: https://www.autocodes.com/p...

P1101 Ford Code - Mass Air Flow Sensor Out of Self-Test Range
Read more: https://www.autocodes.com/p...

P1703 Ford Code - Brake On/Off Switch Out of Self-Test Range
Read more: https://www.autocodes.com/p...

P1780 Ford Code - Transmission Control Switch Circuit is Out of Self-Test Range
Read more: https://www.autocodes.com/p...

P2196 Ford Code - Oxygen Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1
Read more: https://www.autocodes.com/p...

P2271 Ford Code - Oxygen Sensor Signal Stuck Rich Bank 1 Sensor 2
Read more: https://www.autocodes.com/p...

P0121 Ford Code - Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance
Read more: https://www.autocodes.com/p...

I know what the codes are but multiple codes being thrown at the same time when running the key on engine running scan , it won't stay running long enough to pull up live data streams or graphs on anything at an idle, as its already hard to get it started and it will quickly die (as I stated it was running perfect going down the road then just died and now wont stay running . When however, I do manage to start it it wont stay running unless I throttle it up past 2500 rpm, then it smooths out. I have cleared the codes several times and the key on engine off scan only shows the P0340. on running the key on engine running scan is when all the other codes are set on that particular scan mode, after a full charge and battery being tested, I will be checking to see if their is a parasitic draw on the battery over the past couple days, as mentioned I have a dealership manual and dealership wiring manual , checking the recommended tests for the Cam sensor circuit would indicate there is a short, ( manual states connector signal and return wire to battery (-) and between them are resistances are above 10k oms if yes repair/replace the PCM,.. if no repair the short so I only get a 12k ohm reading from the return signal wire and nothing from the other test connections) but seems strange a short would be sudden without an intermittent issue prior to failure, this is whats perplexing me ,..

so I guess its bad wire or bad connector hunting time, along related/shared connected circuits or if no luck there hook up my VCMII and re-flash the PCM see if that fixes anything before actually replacing the PCM , uggg never came across such an issue in all my years ,...

I have a 2003 Ford Mustang and the P0340 came up on the Camshaft Sensor Failure. Reset, turned off ignition, came back on. Solid engine light. No symptoms. What's your opinion?