Code P24E2????????

[EDankievitch]

Just got a strange code out of my 2013 Code P24E2 my friends at RAM have no idea what it is. Anyone ever see this one or have any thoughts?

 

[EDankievitch]

Ok, Just found some info it has to do with the DEF sensor. My guess is being everything is very frozen (was 8 last night and this morning) here it got a strange reading? Friend at dealer said to clear and see if it shows up again....

 

[gsbrockman]

my friends at RAM have no idea what it is.

That's a real confidence booster.....is it not??? :-laf

 

[DonFitzwater]

-40 here this week and no codes for frozen DEF....................

 

[sag2]

Theory of Operation
The Ammonia Sensor is located in the middle of the aftertreatment SCR Catalyst and is used to measure the ammonia concentration in the aftertreatment system. The Ammonia Sensor Module is a smart device that performs its own internal diagnostics, as well as diagnostics on the sensor and reports malfunctions back to the Powertrain Control Module (PCM) via the J1939 data link. The PCM will illuminate the Malfunction Indicator Lamp (MIL) after the diagnostic runs and fails in two consecutive drive cycles.
•When Monitored:
Continuously with the ignition on.
•Set Conditions:
The Ammonia Sensor Module is reporting an error for the Ammonia Sensor to the Powertrain Control Module (PCM).
Possible Causes
AMMONIA SENSOR

 

[EDankievitch]

Ok, so money well spent on the Cd manual. I open it up go into the trouble shooting section system diag. There I find the list of DTC's scroll down through the list, and it's a long list and there it is P24E2 ammonia sensor click on it and the whole thing comes up what it is how it works and what to look for to test it. First thing they said was to remove the DEF injector and check for chrystalazation clogging it. Ok easy enough for us shade tree guys to do.... Go to the DEF system section of the manual there it is where it's located how it works and how to remove and re- install it. So out into the cold and under the truck tem min later it's out and looking nice and clean. But I notice the unit is dry so id the plumbing. Now I'm thinking the worst DEF pump failure..... Back to the manual... Ok I don't have the laptop nor the programs to test anything the right way but what the hell live life on the edge... I hook up the injector but don't install it back into the SRC start the truck and check it sure enough No DEF coming out. remove the injector from the plumbing but leave it hooked up electricaly start the enging sure enough No DEF from the supply line. Nor do I hear the pump running. At this point I'm about to toss in the towel and admit defeat. I re assemble everything and I'm about to call it a day. That jug of apple pie moonshine is sounding really good right now. Then it hits me check the fuse dummy. Sure enough there in the very fine print number F08 and F19 there are fuses for the DEF system. And as luck would have it F19 is blown. Swap in the spare and start it up and with in 5 min I get the normal wisp of water vapor out the tail pipe. I hear the DEF pump running. Plug in my scan tool and No codes. My guess is the other night when it was 8 degrees the computer tried to turn on the DEF pump only it was frozen solid. Poping the fuse. Guess I'll wait and see if it happens again. For anyone thinking about getting the shop manual get it as the info is priceless on a Sunday afternoon. I know it sure helped me find my way around and find my issue.

 

[DonFitzwater]

Good find!

 

[rynosback]

That's a real confidence booster.....is it not??? :-laf

I thought the same thing. Maybe I should have drank the Kool Aid and bought a Ford..... But then again maybe he asked his sales guy that does not now **** about these trucks technically.

 

[rynosback]

Just got a strange code out of my 2013 Code P24E2 my friends at RAM have no idea what it is. Anyone ever see this one or have any thoughts?

Ok, Just found some info it has to do with the DEF sensor. My guess is being everything is very frozen (was 8 last night and this morning) here it got a strange reading? Friend at dealer said to clear and see if it shows up again....

Ok, so money well spent on the Cd manual. I open it up go into the trouble shooting section system diag. There I find the list of DTC's scroll down through the list, and it's a long list and there it is P24E2 ammonia sensor click on it and the whole thing comes up what it is how it works and what to look for to test it. First thing they said was to remove the DEF injector and check for chrystalazation clogging it. Ok easy enough for us shade tree guys to do.... Go to the DEF system section of the manual there it is where it's located how it works and how to remove and re- install it. So out into the cold and under the truck tem min later it's out and looking nice and clean. But I notice the unit is dry so id the plumbing. Now I'm thinking the worst DEF pump failure..... Back to the manual... Ok I don't have the laptop nor the programs to test anything the right way but what the hell live life on the edge... I hook up the injector but don't install it back into the SRC start the truck and check it sure enough No DEF coming out. remove the injector from the plumbing but leave it hooked up electricaly start the enging sure enough No DEF from the supply line. Nor do I hear the pump running. At this point I'm about to toss in the towel and admit defeat. I re assemble everything and I'm about to call it a day. That jug of apple pie moonshine is sounding really good right now. Then it hits me check the fuse dummy. Sure enough there in the very fine print number F08 and F19 there are fuses for the DEF system. And as luck would have it F19 is blown. Swap in the spare and start it up and with in 5 min I get the normal wisp of water vapor out the tail pipe. I hear the DEF pump running. Plug in my scan tool and No codes. My guess is the other night when it was 8 degrees the computer tried to turn on the DEF pump only it was frozen solid. Poping the fuse. Guess I'll wait and see if it happens again. For anyone thinking about getting the shop manual get it as the info is priceless on a Sunday afternoon. I know it sure helped me find my way around and find my issue.

Got to love when you answer your own question in 23 minutes.

 

[EDankievitch]

Ok, it was 1 degree the other morning. No blown fuses. So far so good. Must have been a defective fuse maybe? I had Ram go through the truck they found no issues with the DEF system. Did come up with a re-call on the DPF sensors wiring harness so they installed the new harness. Also said there is the fuel heater plug re-call only there are No Parts available for it yet. This one has been written up a few times here. My say a small bit of Die electric grease on the fuel heater plug contacts will go far to head off the connection from failing. Anyone have an Idea what the issue was with the DPF harness why it had to be changed?

 

[Bob4x4]

The Diesel Particulate Filter (DPF) temperature sensor electrical connectors on
about 28,000 of the above vehicles may have been connected to the incorrect body
wiring harness electrical connectors. This can cause tailpipe emissions of oxides of
nitrogen (NOx) to exceed the Federal and California emissions standard.

 

[EDankievitch]

Got ya.... It's probably a good thing they stopped running the Space Shuttle as it would never be able to stay with in the new emisssions limits..... Lol

 

[EDankievitch]

Well so much for it being a fluke instance with the fuse being blown. The other day it was 6 degrees here and about 1.5 miles into my trip I get the ding and CEL lamp only this time it goes into limp mode. Let me tell you it really sucks when this truck will not go faster than 5 mph. After a few start and stop cycles with the key I was able to get going and into the shop it went. Same P24E2 code same No water vapor trail out of the tail pipe. Dealer said the fuse was not blown but they replaced some part in the DEF system and found some TSB that led to another Re-flash... The shop was awesome delivering my truck to my job as I had to work last night. This morning the Temp was -2 and once again half a mile in to my morning trip I get the same CEL lamp and the alarm ding. I'm thinking my truck must be a warm weather truck. Guess it's sell the truck or relocate some place where the weather stays above freezing.... Guess it's back to the dealer's shop on Tues. Stay tuned this chapter seems to have a few more plot turns in store.....

 

[DonFitzwater]

Yep, keep after it. They'll get it sorted at some point.

 

[EDankievitch]

Or I'll just have to relocate to Fla.... I'm thinkin Key West where it's always Sat Night..

 

[EDankievitch]

Figures the temp goes above 28 degrees and the CEL lamp clears it self. I'm really thinkin the DEF tank and Line heater is not working.... It's going to be 0 again tommrrow and I've got a dealer visit planned I hope it fails tonight again so they can find the issue....

 

[EDankievitch]

Ok... so after half a day at the dealer and the truck being hooked to their and Chysler's computers it turns out there are a few TSB's dealing with this code. In my case one of the sensors seems to have been bad. It would tell the computer to turn on the DEF heater below 40 then it would tell it to turn the heater off around 10 degrees right when you need it the most. The Shop tec was able to make it fail in the shop, well just outside the shop it helped that it was 12 outside. I hope they found it but I really have no way to know for sure as it's not expected to be very cold here the next few days... So far it's only failed on those really cold days.....

 

[RKerner]

Any updates? I keep setting P24ED, P24E2, P24E7, P24E9. Most of this happened after filling my DEF at Cenex' new filling station... Or, might be wiring since I don't get a suppy voltage code?

 

[EDankievitch]

The dealer changed out the sensor in the SRC cat and re flashed the computer. It's been warm so I'm not really sure if it's been fixed but I haven't had anymore issues with CEL lamps or codes showing their ugly head. The TEC said that they ( RAM) had been having issues with the SRC sensor and cold weather.

 

[zakimodo]

EDankievetch I know I am bringing this back from the dead.

Curious if this came up again. I had the CEL with this code pop up yesterday.