Tim, I did a quick search on the forums for your P0340 code and found these.

Good start there perhaps?

 

You're out of your vulcan mind, Spock.

 

Ground control to Major Tim:

I'd be quite capably testing the crankshaft position sensor.

OK, I have to add something here and it's not a criticism of you Tim, but apparently of your equipment. If neither of your interfaces can identify that P0340 on a 1995 Jaguar XJ6 is a fault code for a crank position sensor fault, then I would consider them as virtually useless diagnostic tools on this vehicle. You'd be ahead of the game just by watching for tachometer needle bounce and listening for injector operation with a stethoscope while cranking the engine. This is the most common reason why an AJ16 will be a no-start, and in that case both of those checks will show that nobody's home. No CPS signal= no ignition trigger or injector operation.

 

Uh oh....

I'm used to stepping on my ****, I just hate doing it in public.

P0340 is CAM POSITION SENSOR, not crank position sensor. That's the unit on the RH side of the engine that plugs in where the distributor used to be. Check the connections going to it, the CMPS is generally reliable so I would suspect a wiring fault as opposed to component failure or incorrect adjustment.

Earlier symptoms given for CKPS failure do not necessarily apply, I have not seen a cam position sensor fault so I do not know. My apologies for my error. Same question about the diagnostic equipment applies, its' ability to read is as suspect as my own.

So I guess I could have been a squirrel and simply erased my errant post, right? Nope, I'll take my medicine and go have a time out. Bye bye.

 

Have a read, I'll try using somebody else's work for the sake of clarity: hit the link, scroll down and look on the left under Jaguar, click 'Maintenance". There is a Jaguar factory page reprinted about the camshaft position sensor.

http://www.carrera911.pwp.blueyonder.co.uk/

Everybody **** Chung tonight.

 

I must be... I should stick to audio upgrades and leave my crank out of it. Or is it cam... I can't remember what gets me in trouble.

 

That's pretty funny for a bureaucrat! I had to throw down my favorite Star Trek line, thought you might appreciate it.

 

Check the position of the cam position sensor relative to TDC 1 firing. I'm too lazy to explain how to do it and I can't write so well. Andy, can you take it?
That'd be my first check, then wiring, then sensor itself. Most likely and in my experience this code was always on because the timing of the sensor relative to TDC 1 firing was off.

 

Posting the cause once you find it will be thanks enough.

 

What did you ultimately find was the cause of the Cam Position Sensor Error... assuming you did? Please share. I have the same error code myself and need to start checking it out.

Thank you!

SirJag

 

Sirjag, I don't think he will reply to your post considering he is a guest rather than an active poster

 

I ran into the same problem with my 96 VP w/120 K. I live in S. California What would happen is the car would start fine while it was cold and it was cold outside but if it was hot (above 80 degrees Fahrenheit) and the car was up to running temp, it would take a lot of cranking for it to re- start.
I did not have a clue as to the why bad Fuel pump, bad ECU, bad ECU connection finally after a few months it thew the P0340 code,
I was happy because I new the "why" and then the fun started trying to find a new cam sensor. With all electrical issues I buy new parts so the search started Jaguar has a part number for a rebuilding kit ($285) but no Jag dealer in the US has the kit it had been on back order for over a year.
Rock Automotive had the sensor but the only one that was available was $375. Then I called salvage yard's/ jag used parts and they wanted anywhere from $175-250 for a USED sensor. Then I finally found a wrecker in England and bought one for less than $50- shipped (though it took 3 weeks to arrive). I installed the sensor and everything is fine. If you want the contact information PM me and I will go through my records and forward it to you.

 

Below is a link to a e-bay auction for the same UK wrecker that I bought mine from for 15 BP plus shipping
JAGUAR XJ6 X300 CAM SENSOR | eBay UK

I hope this helps
I know that I spent hours in finding one for a reasonable price

 

I had to take my x type 04 with 110,030 miles on it (never serviced before only minor maintenance oil change and stuff) to the dealer due to the fact that I had a code p0340: catalist system below treshold bank 2. It was the bad Camshaft sensor $168 about the same if I get it online, the Tech quoted me $115 for the Computer diagnostic and $348 for two sensors Camshaft and crankshaft sensor because He said it is likely that the crankshaft sensor is bad too and is better to replace both otherwise i will be coming back in the future and i would have to pay again for a computer diagnostic $115 that is another think, I replace my self the MAF sensor and my auto scanner that i bought was not able to delete the codes do not get me wrong it did but the check engine light came back due to the fact that the dealer has the one equiptment that can tell the computer that the part installed is new (the proper sofware to do ) so the Tech added an updated sofware to my comp that he said was needed, for free and since I am going to pay for the part and have him do the job he took off the bill the charges for the Comp Diag. $115 so total with US tax, parts and labor $556 and I mentioned that I will install the parts by myself and he stated that is ok if I wanted to d that but that I won't be able to tell the computer that the parts are new (reset it) since the auto scanner delete codes but can not reset them ( telling the Comp that the part is new) i most likly will get the engine light back on again so i won't be saving money since i would have to come back again to them total $556 and knowing that my Jag has 110,000 miles and never been serviced before like major things like that i am ok with it

 

I had to take my x type 04 with 110,030 miles on it (never serviced before only minor maintenance oil change and stuff) to the dealer due to the fact that I had a code p0340: catalist system below treshold bank 2. It was the bad Camshaft sensor $168 about the same if I get it online, the Tech quoted me $115 for the Computer diagnostic and $348 for two sensors Camshaft and crankshaft sensor because He said it is likely that the crankshaft sensor is bad too and is better to replace both otherwise i will be coming back in the future and i would have to pay again for a computer diagnostic $115 that is another think, I replace my self the MAF sensor and my auto scanner that i bought was not able to delete the codes do not get me wrong it did but the check engine light came back due to the fact that the dealer has the one equiptment that can tell the computer that the part installed is new (the proper sofware to do ) so the Tech added an updated sofware to my comp that he said was needed, for free and since I am going to pay for the part and have him do the job he took off the bill the charges for the Comp Diag. $115 so total with US tax, parts and labor $556 and I mentioned that I will install the parts by myself and he stated that is ok if I wanted to d that but that I won't be able to tell the computer that the parts are new (reset it) since the auto scanner delete codes but can not reset them ( telling the Comp that the part is new) i most likly will get the engine light back on again so i won't be saving money since i would have to come back again to them total $556 and knowing that my Jag has 110,000 miles and never been serviced before like major things like that i am ok with it

 

Say dude- Are you on crank or did you never learn about a period? That tired me out.

 

I know I posted it twice accidentally, Update: I had to take the car back to the dealer because my check engine light is on again after repairs, after paying $600 for parts and labor to replace the Cam position sensors (2) and crankshaft position sensor (1) due to code p0340 the Tech closed the hood in a way that can not be open, at this point they are trying to figure out how to open it and I am not happy at all