myredgt

I was driving around today and the engine light came on. Not flashing, just on. I noticed nothing different in how the car drives or handles, but it still was on. I plugged in my xcal and got the code p0340. I have looked around and am not really sure what it means or how to fix it.

If anyone could tell me what it means and possible how to fix it, I would be greatly appreciative. Hopefully I won't have to make the trip to the dealer. [:'(]

Thanks.

- C

Ford_Dude

http://www.ford-trucks.com/tsb/fullt...php?tsb=06-2-9

cheftjpeck

cam shaft position sensor...this has been linked to the alternator having a bad diode..here is the tsb on it...all I did with mine is cleared the trouble code and it has returned once in 3 months....if you are at all nervous..bring to dealer....good luck...hope this helps

myredgt

Does that mean battery or alternator?

cheftjpeck

the generator is the alternator....

cheftjpeck

try this again since the other files are small

[IMG]local://upfiles/42783/48DC3C99C95E467F8C445B89146A4173.jpg[/IMG]

[IMG]local://upfiles/42783/9F6B5E4D525744FC863C26850A3C4902.jpg[/IMG]

[IMG]local://upfiles/42783/3EFC4182F38248E7BD3F3490F9F974B3.jpg[/IMG]

[IMG]local://upfiles/42783/68D1605F61444C21A384A2411E74783F.jpg[/IMG]

paper doll

p.s. google is really helpful with codes if you next time you want a quicker answer, I found that out when the last of 4 of my o2 sensors threw a code

myredgt

Thanks everyone.

myredgt

**update**

I put my tune back to stock, I have a Brenspeed tune. I drove stock for a while, no code. I put the tune back in, drove about 45 min with no a/c, windows down, no code. I went inside for a while and it got hot. Went outside, started the car, no code. As soon as I turned on the a/c, theres the p0340 again. I went to advance auto, they tested the battery and the alternaor, neither which were bad.

Do you think it's the tune? Should I call Brenspeed and get a new tune?

I am goint to run my car on stock for a day or two, with and without a/c, and see what happens. If the code only comes on when the tune is in, that has to be the problem, yes? [&:]

bl1nk

I actually have a thread about this same code. I threw mine about 2 weeks ago. Sounds like exactly what happened to me...

I was also tuned by Brenspeed so I returned my car to stock along with the stock air box and drove it around for a week or so, no code. I just reloaded Brents tune yesterday and put my CAI back on and I havent thrown a code yet, so well see what happens.

Ive had his tune for close to a year now and never had any problems before now. Not sure if its related to the AC though, because I blast mine all the time since its usually in the high 90s here. Just wondering, but are you auto or manual? I would assume the tunes for each are different, so maybe it has something to do with that?