Limp mode

[09megacabcummins]

I have 5 codes on start up 2009 ram 3500 6.7 cummins
P2228 barometric pressure circuit low
P0192 fuel rail pressure sensor circuit low
P051c crankcase pressure sensor circuit low
P0340 camshaft position sensor A circuit bank1
P0652 sensor reference voltage B circuit low
All of this happened at the same time and the truck is in limp mode it also keeps telling me the dpf if full (which it’s deleted) and the throttle position sensor light is on when driving after driving i get these codes
P000f fuel pressure over pressure relief valve activated
P0087 fuel rail/system pressure too low
P0106 manifold absolute pressure/barometric pressure circuit range/performance
P0107 manifold absolute pressure/barometric pressure circuit low input
So it looks as though alot of sensors have low voltage I need to get this truck back going asap its my work truck

 

[09megacabcummins]

Any ideas? Im still dealing with this issue it has fixed its self multiple times for a good while then randomly starts again

 

[tron67j]

There is a diesel engine thread, you could try posting there. And in 4th gen there are some very knowledgeable people who respond there, maybe you could post something there to ask them to check your 3rd gen question. Good luck.

 

[tron67j]

Any ideas? Im still dealing with this issue it has fixed its self multiple times for a good while then randomly starts again

See above

 

[Fast69Mopar]

Any ideas? Im still dealing with this issue it has fixed its self multiple times for a good while then randomly starts again

When I see an issue like this the first thing I do is inspect the wiring harness on the engine. They are all circuit low DTC's so it's time to get out the DVOM and start checking the 5V supply and ground at each sensor. I'm betting that you will find either the 5V supply shorted to ground or one of the engine sensors has failed and is shorted internally and pulling the 5V supply circuit down. These engine sensors use a 3-wire setup. One is 5V from the PCM/ECM, one is ground and the other is the signal to the PCM/ECM.

Has the engine had any major repairs before this problem started?

 

[09megacabcummins]

No major repairs I unplugged and emissions related computer on the passenger side of the frame and it seemed to fix it and then a couple weeks later it started right back up and this time included saying the ccv filter was plugged which I just changed maybe 15,000 or so ago

 

[09megacabcummins]

I will try to test voltage at some of the sensors this afternoon, would a shorted sensor reset or anything for a couple weeks to months at a time before returning with problems again?

 

[09megacabcummins]

I tried all the sensors I could see that were on the same loop and they all had 3.6v getting to them whether i grounded at the sensor or on battery

 

[09megacabcummins]

Is there place’s that will test the ecm if i pull it I'm fairly sure the ecm is not putting out enough voltage but i just need it tested