P249E and P1C54 codes def injector plugged ?

[keny]

mil light on, p2509 , p249e and p1c54 codes. The p2509 code I think is from one battery failing and being replaced. The p249e and p1c54 are exhaust emissions related, would a plugged def injector cause them? Or is there another issue, I am ordering a def injector gasket and will check for def crystal build up.

Thanks in advance for information, Kenny
2014 2500 Tradesman

 

[Topzide]

Quick search came up with these, hope this will help. Batteries should be replaced in pairs. Good luck and maybe someone else will chime in with first hand knowledge.
Make:
RAM
Code:
P249E
Definition:
Closed Loop SCR Reductant Injection Control At Limit - Flow Too High
Description:
The Powertrain Control Module (PCM) uses the NOx Sensor 1/1 and NOx Sensor 1/2 feedback along with engine operating and environmental conditions to calculate the Diesel Exhaust Fluid (DEF) dosing rate. This diagnostic will fail when the PCM detects that the adjusted DEF dosing commanded rate has reached a maximum limit and the downstream, ‘system out’ levels (NOx Sensor 1/2) are higher than expected. The PCM will illuminate the Malfunction Indicator Lamp (MIL) after the diagnostic runs and fails in 2 consecutive drive cycles. The PCM will turn off the MIL after the diagnostic runs and passes in 3 consecutive drive cycles.
Cause:

• NOX SENSOR 1/2
• DEGRADED, DILUTED OR INCORRECT DIESEL EXHAUST FLUID
• DIESEL EXHAUST FLUID DEPOSITS IN THE DECOMPOSITION TUBE
• EXHAUST SYSTEM LEAKS
• DEF SYSTEM LEAKS
• MALFUNCTIONING DEF DOSING SYSTEM
• DAMAGED SCR CATALYST

Make:
RAM
Code:
P1C54
Definition:
SCR NOx Catalyst Missing
Description:
The aftertreatment system is equipped with two Nox Sensors and modules. The upstream NOx Sensor 1/1 is located on the Turbocharger elbow downpipe and is permanently connected to a corresponding Nox Sensor Module mounted to the hot side of the engine block. The downstream NOx Sensor 1/2 is located at the outlet of the SCR Catalyst and is permanently connected to a corresponding Nox Sensor Module which is mounted on the right frame rail. The NOx Sensors and NOx Sensor Modules are calibrated to each other and must be replaced as an assembly. The two NOx Sensor and Module asemblies are not interchangeable. The NOx Sensor Modules are smart devices and communicate with the Powertrain Control Module (PCM) over the J1939 Data Link. The NOx Sensor Modules perform their own internal diagnostics and report malfunctions back to the PCM. The NOx Sensors are used to monitor the efficiency of the SCR Catalyst and dosing system. The PCM will illuminate the Malfunction Indicator Lamp (MIL) after the diagnostic runs and fails in two consecutive drive cycles. The PCM will turn off the MIL immediately after the monitor runs and passes.
Cause:

• DEGRADED, DILUTED, OR INCORRECT DIESEL EXHAUST FLUID
• DIESEL EXHAUST FLUID DEPOSITS IN THE DECOMPOSITION TUBE
• EXHAUST SYSTEM LEAKS
• MALFUNCTIONING DIESEL EXHAUST FLUID DOSING SYSTEM
• MALFUNCTIONING SCR CATALYST

 

[bcbender]

The p2509 code I think is from one battery failing and being replaced.

Just FYI, no comment on the DEF codes, but a general statement: you should always replace the batteries as a set, especially the older they get. The internal resistance difference even within "good" batteries can present a situation where one discharges the other slowly. I know dealing with warranty batteries can present an issue as vendors will not warranty a good battery, I usually just take a "good one" and move it to another application and put a new "set" in the truck.

 

[Topzide]

@keny , I've got factory manual for my truck if you need any assistance, PM me and I'll see what we can find. Motor stuff the same other stuff would be close enough to get you into right ball park! Hope it doesn't drive you to crazy and you're lucky being on west coast as we're freezing our buts off on east coast today! Jim

 

[keny]

Thank you Topzide and bcbender for the response. I did replace both batteries 2 1/2 years ago. The bad battery was replaced free under warranty. Load tested both batteries, used one : before load test 12.69 v
during test lowest 11.59
recovery after load test button released 12.37 , 2 min 12.54, 3min 12.59 4 min 12.61, 5 min 12.63
new one : before 12.76
test low 11.84
recovery after load test button released 12.63, 2min 12.73, 3min 12.75, 4min 12.76, 5min 12.76
Going to run the old one until it fails, the new one could fail before the old one does.

Topzide thanks for the offer of more detailed info , I will PM you if I need it. Since this mil light came on with the bad battery issue, I think low voltage after the cold morning start could have caused it. After the preheat cycle the starter wouldn't turn the motor, turned key to off and tried again it just barely turned but started. I did not notice the mil light until after I had driven the truck and restarted it a couple of times, I did not check the codes until after the battery replacement. Your info of the Nox Diagnostics is a good clue of the reason for codes P249E and P1C54.
I reset the codes and have driven it , so far all is good.
Fingers crossed that the new battery solves it.
Kenny

Thanks again , I will update whether it fails or not in a couple weeks.

 

[bcbender]

Low voltage can present all kinds of weird things in these rolling computers.

 

[keny]

Update on the mil light and codes, it must have been caused by low voltage / bad battery. Haven't had any codes or pending codes since replacing the battery.
Again, thanks for the responses !
Kenny