What to do about bad def quality and NoX sensor?
There is a diagnostic procedure to follow to identify the problem. An intermittent problem like yours is the toughest to pinpoint. The exact fault code (SPN and FMI) will help, also any thing else you can tell us. Is there anything pattern or conditions that may be associated with it?
Is the Insite Flash code active or inactive?
All codes can be classified as either Active or Inactive, and their status can be determined by flash codes or through the Insite Electronic Service Tool. Due to new OBD2 compliance, codes no longer have to be active or inactive. Codes also can be “pending” and also show active even after the problem is repaired.
Where is the NoX sensor near the exhaust stack?
Discussion in ‘ Peterbilt Forum ‘ started by JKtrash, Mar 2, 2015 . we changed the NOx sensor near the exhaust stack (which we assumed to be the outlet sensor) but the same code keeps coming up. does anyone have any ideas as to where to look to solve the problem?
Can a FMI sensor read too much NOx?
The fact is if I have an issue I call and its generally taken care of for me. FMI 9 – sensor reads too much NOx in exaust, electric problems are FMI 3 ore 4. We replaced the sensor already, but no avail. had to send to dealer.
Do you have a NOx conversion efficiency fault?
It looks to me like you do not have a NOx sensor fault at all. NOx Conversion efficiency is more of a logic fault, not a sensor problem. From the limited information I have, I can guess that your NOx sensors are working correctly, but it is not sensing enough of a NOx reduction. Meaning you have a problem in the SCR system.
What should the idle temperature be on a Paccar mx-13?
PACCAR MX-13 Engine Operator’s Manual). o The recommended range for Engine Idle Shutdown Timer (EIST) to be active is between 25°F and 75°F. Prolonged periods of idle between 25°F and 35°F (current low-end EIST setting) within this temperature range may not provide significant comfort benefits to the operator.