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Have a 2015 Cascadia that had code for nox conversation

efficiency low. And was derated...
Have a 2015 Cascadia that had code for nox conversation efficiency low. And was derated with stop engine light. Ran regen and passed scr efficiency. The code for nox efficiency went inactive but the derate and stop engine light still active . When I clear code they both come back right away. Never had this happen before. What causes it to come back?
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Answered in 9 minutes by:
6/25/2019
Technician: Daniel Wilson,
 replied 3 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,843
Experience: Owner at DJ Wilson
Verified

Hi, My name is***** will be glad to help. We can follow up as needed on here, Give me some time to review your information and follow up with my responses. Professionals are not employees of the site but users of the site and help on here as time allows in between jobs, family, etc. Response time can vary depending on my work load each day but I will always respond back on my next available login. Feel free to respond back at anytime if for any reason we seem to get separated, for status, etc.

Please post all codes logged in history by number and the engine model info.

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Customer reply replied 3 years ago
DD 15. First the code was spn 4364 fmi 1, spn 4364 fmi 18, and 5346 fmi 0. After I ran regen. The 5346 fmi 0 stayed active but the other 2 changed to permanent. In black writing. I ran scr conversation efficiency still tha same. Also the def if full but the small light is blinking.
Technician: Daniel Wilson,
 replied 3 years ago

4364 Troubleshooting

Click the link above for the 4364 troubleshooting steps.

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Technician: Daniel Wilson,
 replied 3 years ago

5346 5346 is an informational fault indicating that a regulatory fault has been ignored and the power has been derated or cut back until repairs are made. If the system will not reset properly after the repairs have been done, you may need to have the ECM reprogrammed in the software updated back to factory settings to completely reset the system. You can always try disconnecting the battery cable and waiting several minutes before reconnecting but in some cases that will do nothing. It's a pleasure to help anyway I can.

Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,843
Experience: Owner at DJ Wilson
Verified
Daniel Wilson and 87 other Medium and Heavy Trucks Specialists are ready to help you
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Customer reply replied 3 years ago
Ran ATD test. Took a while but after it was done lights went away on it’s own. Thanks
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Daniel Wilson
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Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,843
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