Bump, anyone had this issue, or have any ideas of what to check?

Thanks

 

I'm not too much help but
I'm a different year. My cam sensor sensor is on 1.5 volt.
The cam sensor for me shares sensor supply and return paths with
Fuel pressure sensor, boost pressure/temp sensor, and the A/C pressure sensor.

Cold start any symptoms? Rough idle or smoke?
You did change the injectors?
I don't know free bump

 

I appreciate the free bump, absolutely no syptoms that i can tell but its my first cummins, mechanic said it runs amazingly, and valves didnt need to be adjusted when they did they injectors(yes i did injectors)

No cold start syptoms either it runs like a champ and starts like a champ. Mind you its not cold season here.

I just went over all the grounds and all the posts cleaning / antiseizeing

Well see if that helps.

Next i guess ill go for a scan to see if the ecm is hooped

 

Does however have a very slight underlying tick at idle that i can hear, i attributed it to the cp3 maybe doesnt sound to be coming from the engine.


I clear the codes and let the truck idle in p, no code, i drive and am on the pedal for 1/2 hour nothing, i pull into town and start coasting and boom the code comes up,

seems to be when the truck is coasting / idling at low speed, maybe that will help.

 

Ok so i just got back from a quick 1/2 hour cruise and heres the thing, the truck had the batteries undone for over 1/2 hour so the codes reset or should have.

I went to start the truck and the check engine light was on immediately.


So i took it for a normal drive how i usually do and when i got back i decided to check my codes and it gives me the ----- and then says done,


So now it appears the p0341 code is cleared but i now have a check engine light for a unknown code.


This just keeps getting better and better.

By the way when i clean the battery posts off i taped off and dissconnected the rest of the cords supplying power to the old command start.

 

I think im going to go get the battery's tested today, thats all i can come up with for the ------ cel.

Also possibly the turbo speed sensor????

I dont know im just taking stabs in the dark with the info i get from google.



ANYONE!!!!??????

 

Have you cycled the key for the code? Sometimes it will show codes that a cheaper scanner won't.

 

Thats what i mean i cycle the key and no codes comme up it just shows -------, then says ---done----, no codes show.

Yet i have a constant cel.

 

You might have to go to the dealer for a drb3 scanner to read it. It might be worth it for a clue but it's probably an ABS code or similar if I were to guess.

 

So no responses at all hey, just one person. Some community!

Anyways bickering aside im ready to burn this truck, cel is always on and its killing me.

Tach reads 500rpm above or below idle give or take the day, so it must be affecting the tach.

Aswell i have a fan clutch p0480 p0483 codes.

Also to add to the facts, my truck is rather noisey at idle to me, all mechs say it is fine but it seems to have developed a knock / tick all the time, more faint when revving but it is always there, and i can feel a knock in injector line #1 but they are all tested perfect and the knock is only between the bends in the line.


Please does anybody know what it could be, one guy suggested putting a lift pump in.


All this truck has been is a headache on wheels, im ready to light it on fire, and go get a real truck like i had before i " UPGRADED "

 

06s r known for bad dashes and the tach goin out so sadly I have to say don't trust what it says unless ur hooked up to a computer or something to confirm what its reading. Also the tic could be a dropped valve seat. Take off the cover and look for a valve stem lower than the others. Who tested your injectors? And no turbo speed sensor on these just some snake oil places will feed poor customers to pull more money outa their wallet.

 

Your p0480 p0483 codes would have shown long ago by cycling the key if the same problem was present. Your OLD problem and your NEW problem are different. Good luck.

 

Oh for sure, i am going to replace the fan clutch, but i am still stumped about the p0341 code and it is really bothering me now.

Thinking about clipping the wire to the cel lol

 

Do you know any of the history of the truck? I've seen belts come off these trucks and absolutely whip the piss out of the harness on the front of the engine. Camshaft sensor AND fan clutch included.

I really thing you are going to have to take some things apart to see what your problem is, it sounds like you have a damaged harness somewhere along the line.

 

SASK
Dont feel alone,I have a 06 as well, I am getting the 341 code as TOO! I have put ALOT of money in it and still got the code! Truck has been to two Dodge shops, reflashed by both one on march other in late july and a NEW ECM, still 341 code, two diesel shops, first shop instaled a new wire from the sensor to the ECM,still got code! second shop pulled the front off the motor to check if the cam gear was walking off the cam, (would cause loss of signal) well eveything was good there.I have put new sensors in the camshaft first then the crankshaft just to make sure that they were both giving me the same code. I have talked too two people that did work for cummins and one told me too put a new main engine harness in the truck. Have not did that yet! The other was not help. We must have twins (trucks) because no one has had this 341 code that a sensor did not fix. So if anyone has any ideas where to go from here that would bee a great help. Thanks Neil

 

I feel your pain, i have a 05 with the overboost code and the slow fan speed sode, its been there for over 2 years..i have 300,000 on it now.it still runs good..i gave up waisitng money on it..when it shakes and stalls tehn i,ll take it to the shop..no more chasing ghosts for me! Dodges always were know to have engine lts on all the time..

 

P0341 FIXED, FINALLY!!!
Well, kind of..... Just gotta keep the tank above half full!
I've been complaining and throwing good after bad parts at this thing to no avail, and changed my stories as to what i keep noticing causes it, i.e. coasting into town, but couldn't put my finger on 100% of the time. Then i caught onto it returning in no time at all when i clear it, but it then randomly disappears.... Not so random, as I've watched it 15X now, clear itself. The light goes off and won't return until A. Fuel tank is below half, and B. Light was either already on from day before, or Cleared & Let sit overnight and truck shut off once or twice, and it will throw the code (2nd key cycle is typical I think)

Now, i really can't yet think of why Fuel Tank & P0341 Camshaft Position Sensor CPM, meet up....?
Anyone else able to notice this commonality?????

 

WELL SaskCummin?
Have you burned the truck up yet?
I am having a similar issue, but my code was connected to an ugly set of circumstances. One where the throttle would go to full and drag me through busy intersections. and reverse the turn-signal from the selected direction. Then die and not want to restart.
3 new ECM's later, a cam sensor, ignition switch and a new brake switch. the P0341 code still beams across the screen. and even though I clear and clear the code it doesn't remain absent.
I need help too!

 

Maybe a bad cp3?

 

06 MegaCab P0341 code *fixed*

This is going to end up being a long post...

I own a 2006 Dodge MegaCab Diesel 4x4 Laramie Automatic truck as well, with 165,000 miles. About 6 months ago, it threw the infamous P0341 code. In fact, it behaved EXACTLY the same as post 1, 16, and 18 above.

The codes began at seemingly random intervals...and there was no performance issue associated with the Check Engine Light, or Malfunction Indicator Lamp (MIL). Just a P0341 Cam sensor error...and that's it. My OBD2 code scanner can clear that code in under 5 seconds, and has at least 50x. Sometimes, the MIL goes out on it's own.

After a while, there was a HARD miss associated with the MIL. Usually while accelerating from a stoplight, less than 2 miles from my home, when engine was cold, but warming up. Seemed worse when engine cold, always after a 30-90 second idling period, usually with A/C or Defrost on, at part throttle. Never died...but TOTAL loss of power for just an instant, (actually about 250 mS) then fully recovered. Usually associated with the MIL...but occasionally I got the miss without the MIL.

Fast forward to November, 2013. Driving from SF to Disneyland with a truck full of teenagers...Made it 250 miles, with exactly zero issues. Crossed Grapevine, and just on the other side of the mountain it was cold. Ambient temp about 40. Long period of very light throttle, mostly idling down hill. MIL illuminates, horrible power surge, but never dies. Wide Open Throttle (WOT) seems to be the only way to accelerate...but sometimes it goes, and sometimes it does not. Kind of like having your foot slide off the pedal. Coast mostly the next 15 miles to Santa Clarita, and then exit. Now the truck is running perfect again. Removed fuse #6 thinking it was the fan circuit. Immediately threw a code...(DUH!) of course you can't read the MIL code if you trip a second one. Just that steady, amber glowing light on the dash.

This is the beginning of the trip, and I also ready to junk this truck...Next day, cleared codes, and drove it without the #6 fuse. Normal for the whole day. That evening, I get the stumble, and the P0341 code again. Replaced the fan circuit fuse #6, and cleared all codes. Truck runs perfectly without event for the next 2 days, and 400 miles back home from vacation. Flawless.

By this time, I am determined to fix this truck...

 

2006 MegaCab p0341 *troubleshooting*

So I have studied and learned a lot about the Dodge and Cummins engine management system. For background, I am a NOT a mechanic, but I am pretty good with cars. I am NOT a "parts changer" and I have little respect for people that take money to "earn while you learn..." on my car. I have a degree in Mechanical Engineering, and I spent much of my career working on automation equipment with both PC based and PLC based processors using single point and distributed I/O. So this p0341 code should be EASY to fix.

First thing first...the Cam Position Sensor is powered by 5 VDC generated by the ECM. Specifically, it is powered by a pink wire at the 4th position on the bottom of the front connector on the ECM. That wire goes to +5 whenever the ignition is on. It feeds the Cam sensor (CPS), the intake pressure sensor (MAP), the fuel pressure sensor (FPS), and the AC pressure switch. (A/C).

So here's what I did...

I took a straight pin from my desk, and speared it thru the pink wire at the Cam switch. Then I connected a Simpson 260 Analog volt meter to measure the voltage. After a long time, and a lot of trial and error...I finally got the engine to throw the light, and sure enough...I could see the voltage swing from +5VDC to 4V to 0V to 5V to 3V then back to 5V steady!!! Awesome!!!

So then I started wiggling every wire between the cam switch and the ECM to see if I could find the intermittent. (I did!) What I found was a loose contact at the ECM on the pink power wire. I could repeat the intermittent 5VDC output by wiggling the pink wire at the harness plug. EUREKA!!! So I pulled the plug, removed the terminal, serviced the contact, soldered the terminal to the copper wire, and re-seated the connector. Measured the output voltage, wiggled the wire...and the connection was good. Buttoned it all back together and declared victory!

Drove it exactly 400 feet, and the Check Engine Light came back on. P0341 Cam sensor. No stall, no surge, just that light.

But wait, there's more. (Remember, I said I fixed it...)

 

2006 MegaCab P0341 *root cause

So after the code tripped (again...) I started thinking about what it could possibly be. I opened up the harness at the ECM, and soldered in a break out wire. I added a plug connector so that I can actively monitor the Pink/yellow wire for voltage, and put my VOM in series to measure current directly. The circuit draws about 25 milliamps at 5VDC. The fluke shows 4.5V, but it is really 5. Under most situations it is steady as a rock.

My thinking was that if I was getting a Voltage fluctuation, it was either because of excess load, (overloading the 5VDC power supply) or it was because of inadequate current available from the 5VDC voltage converter in the ECM. Based on Ohms law...if the sensor or wiring was going low resistance, the current should go up until the Power supply current limits out. This turns out to be totally false, and FYI...by the time the meter senses the high current situation, the Power supply limits output, and reduces voltage. So this method of diagnosis is totally useless. But what it did do was put an active analog ammeter in the CPS power supply circuit. and I happened to feed the wires into the cab of the truck so that I could monitor at all times. This is how I learned that if you disconnect the 5VDC to the entire sensor bank...It will lose power, come to idle, then recover in a strange power mode, then accelerate and knock like crazy. It throws a bunch of codes, (MAP, FPS, CPS, etc.) But it does not die. If you take the 5VDC to Ground...then it throws only the P0341 code, and it will die.

So...It had to be an intermittent short to ground on the 5VDC power bus somewhere. Either in the harness, or in a sensor. Or possibly a weak 5VDC power supply.

I looked at the wiring going from the ECM to the MAP sensor on the very top of the Fuel Rail. Sure enough, there was a taped black harness wire pulled over the top of the fuel distribution bolt. Looked perfectly innocent, but on careful inspection, the black electrical tape was worn thru, and the pink/yellow wire had worn thru and had a tiny cut in it. That cut was allowing an intermittent fault to ground, which put an instantaneous high current on the 5VDC bus, which caused the CPS power feed to open, which is why the symptoms got worse over time.

So when the engine vibrated, it would occasionally cause the wire to get closer to ground. When the engine stalled, the wire moved, and the engine recovered. Worse when cold, worse when the AC is on. Worse when the fuel pressure is modified, and worse after refueling. Worse when accelerating, but sometimes random. Worse after long periods of idling. Also worse after shaking a wooden stick over the hood. None of that stuff really mattered.

The wrong fix would be to replace the CPS, replace the MAP, replace the FPS, replace the ECM, and then replace the harness. (replacing the harness would have also "fixed" this.)

But I relocated the wire, added some split loom...and no more P0341 light.

 

can you show some pics of the specific wires. I have a 06 as well and want to check this out before it becomes a problem.

 

Mopar1973Man's Dodge Cummins Articles - P0341 CAMSHAFT POSITION (CMP) SENSOR SIGNAL

 

It's a nice link...

Thanks 99FiveNine

...And I did actually follow that entire troubleshooting list, printed it out and tried it. But it didn't work.

But it leads you to the conclusion that you have an Intermittent.

Unfortunately, that troubleshooting list did not get me to an answer.

The cause was 5V supply power intermittent fault to ground...which can happen in a sensor, in the PCM, or in the harness.