Derate to 5mph crisis - regen not clearing codes for some reason

pm sent

 

For low conversion ,bad def quality and blinking yellow def light .....
CHANGE OUTLET NOX SENSER FIRST THEN OTHER PARTS IF U STILL NEED...U WILL SAVE MONEY FOR SURE...

 

CHANGE OUTLET NOX SENSOR NOT ONE BOX

 

ON 2012 CASCADIA IT TOOK AROUND 6 MONTHS TO BAD OUTLET SENSOR CODE POP ON DASH . MAY BE ITS NOT FAILING COMPLETELY OR WHEM IT FAIL IT SUSPECT ON UR DEF QUALITY FIRST ......EVERTHING STARTED WITH BAD QUALITY AND LOW COVERSION AND CHANGING PARTS .SOME SAYS I NEED ONE BOX I FLUSH MY TANK AND FILLED WITH BOX DEF FLUID AND MY BAD QULITY GONE BUT LOW CONVERSION STILL THERE AND I DRIVE 6 MONTHS WITH LOW CONVERSION CODE ONLY ...IN BETWEEN I TRIED 3 TIMES TO FILL BULK DEF FROM PUMPS AND BAD QUALITY POPS EVERTIME .THEN FLUSH BACK AND PUT BOX FLUID IN .
AFTER DRIVIING 3 MONTHS ON BOX FLUID BAD OUTLET NOX SENSOR CODES POP UP AND I CHANGE .ALL IS GOOD AFTER THAT DRIVING SINCE 4 MONTHS...ON BULK DEF FLUID

 

ON 2012 CASCADIA IT TOOK AROUND 6 MONTHS TO BAD OUTLET SENSOR CODE POP ON DASH . MAY BE ITS NOT FAILING COMPLETELY OR WHEM IT FAIL IT SUSPECT ON UR DEF QUALITY FIRST ......EVERTHING STARTED WITH BAD QUALITY AND LOW COVERSION AND CHANGING PARTS .SOME SAYS I NEED ONE BOX I FLUSH MY TANK AND FILLED WITH BOX DEF FLUID AND MY BAD QULITY GONE BUT LOW CONVERSION STILL THERE AND I DRIVE 6 MONTHS WITH LOW CONVERSION CODE ONLY ...IN BETWEEN I TRIED 3 TIMES TO FILL BULK DEF FROM PUMPS AND BAD QUALITY POPS EVERTIME .THEN FLUSH BACK AND PUT BOX FLUID IN .
AFTER DRIVIING 3 MONTHS ON BOX FLUID BAD OUTLET NOX SENSOR CODES POP UP AND I CHANGE .ALL IS GOOD AFTER THAT DRIVING SINCE 4 MONTHS...ON BULK DEF FLUID

 

SHUT YOUR CAPS OFF! Also throw in a comma, every now and then.

 

C’mon man. Leave the new member alone! Hahaha.

 

Sorrie

 

Hi, can someone help me? I have these 4 codes everytime i go long uphill wz more than 40k lbs;
1. SPN 4364 FMI 18
2. SPN 3364 FMI 2
3. SPN 5246 FMI 15
4. SPN 5246 FMI 16

Changed 1box temp sensor, inlet n outlet nox sensors, def pump so far n still above codes coming...

Codes will disappear after sometimes on flat road, if on hills would stay longer... and truck derates to 55mph.
If i stop n do parked regen, check engine n flashing def ember light will go n engine light wud stay for a day or more.

Thanks for ur reply