Nox sensor dew point enabled. Once the sensor electronics receives the so-c...
Nox sensor dew point enabled. Once the sensor electronics receives the so-called dew point end signal via CAN bus, the sensor ceramics is heated to 800°C in several steps. I had a Detroit rep tell me a few months ago, they expect nox sensors to be a service part soon. Unfortunately, the SPN FMI code list does not provide any information on the repair of this problem. One small issue like Spn 3238 Fmi 2 can cause a larger component to become damaged without taking the time to investigate. Continuous when enabling conditions met. At key on the NOx sensor heats up to 100C. The dew point temperature is currently set to 140 Detroit SPN 3238 FMI 2 problem code is about Nox Out Sensor Not Ready After Dewpoint Enable Check: Aftertreatment 1 Exhaust Dew Point Data Erratic, Intermittent Or Incorrect; Mu_nox_out_rc. 4. NOTE: If codes 5357-16 or 5357-18 present, fix those first. Are there any air management system fault codes present for the Intake Throttle Valve (ITV), Intake Manifold Pressure (IMP), Intake Air Temperature (IAT), turbocharger, etc. Emission Level This is what the code is saying when it is set on your dashboard: Nox Out Sensor Not Ready After Dewpoint Enable Check: Aftertreatment 1 Exhaust Dew Point Data Erratic, Intermittent Or Incorrect; Mu_nox_out_rc. It just tells you what the code is for Fault code 520365 fmi 5. I physically removed def injector and checked to make sure it was spraying. 1. The dew point is currently set to 120C. ? Next, check the nox sensor dew point hours, if they are close to 10,000, replace. It is but it is just a very very light mist. Perform a stationary regen. SCR inlet NOx sensor. Aug 4, 2025 · Neither of these readings activate until the dew point for that nox sensor is reached. This process takes approximately 45 seconds. The last step is the most important and it goes like this: “ Drive vehicle for ten minutes after AS105: NOx Sensor Dewpoint enabled Inlet parameter changes state from zero to one and fault code goes inactive. Failed NOX sensor heater circuit. Down stream does not. If the def dosing system is working as intended and the nox sensors are good, run a regen and watch nox conversion efficiency. 2. This code indicates that the NOx sensor is not ready after the dew point enable. Direction: Run the applicable PTT Operation per OBD Level. Both sensors were replaced with OEM parts about six months ago. The codes indicate an open circuit to the outlet and inlet NOx sensors, and the dew point hours are 3775 for the outlet and 5000 for the inlet. Inlet NOx Sensor (NOx 1) Diagnostic Trouble Codes - Potential Sensor Failure These codes in yellow below indicate that the inlet NOx sensor is potentially damaged, but further investigation is required to verify sensor condition. Fault code 520365 fmi 5. How to identify ACM software level and NOX sensor dew point hours on Detroit Diesel dd13 ghg 17 en 6 days ago · The convergence of AI with capacitive dew point sensors is also fostering the development of smart sensor networks and IoT-enabled systems. more NOx sensor functionality. Customer: I have a Freightliner Cascadia with a DD13 that is experiencing SCR issues. Meaning, they wear out. Once engine is at standard operating temperature, drive at highway speed with loaded trailer above 1130 rpm continuously for twenty minutes. This could be due to a faulty NOx sensor, wiring issues, or problems with the NOx sensor system. The primary failure mode the NOx Sensors is internal failure, which will generate a sensor specific fault code. It then waits for a “Dew Point” signal from the engine ECM. How to identify ACM software level and NOX sensor dew point hours on Detroit Diesel dd13 ghg 17 engine. If you don't take the time to look into Spn 3238 Fmi 2 engine problem when it arises, it can add up quickly. Spn 3238 Fmi 2 problem code is about Nox Out Sensor Not Ready After Dewpoint Enable Check: Aftertreatment 1 Exhaust Dew Point Data Erratic, Intermittent Or Incorrect; Mu_nox_out_rc. humlty fzi vadqf agqb hqk dlxbi tfd mpvodos trrwxp kusr
