uncleal13 already gave the explanation of codes but here's the diagnostic steps for the faults. Low NOx efficiency is what needs diagnosed first. Needs to be done with the diagnostic software but reading through the steps might help understand the process.
DEF PROBLEM
Discussion in 'Freightliner Forum' started by 294dave, Jul 18, 2020.
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Last edited: Jul 22, 2020
Reason for edit: Miss spelling294dave, QUALITYTRUCK and uncleal13 Thank this. -
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Hi there. i drive 2013 cascadia dd15. recently i had check engine light on which turns into solid light after sometime. goes and comes back after few days. took truck to detroit diesel dealership and this was the diagnose" TRUCK AS CODE 4364/18 SCR NOX CONVERSION LOW. TROUBLESHOOT LEADS TO DEF BLADDER NOT HOLDING AIR, SCHREADER VAVLE IS LEAKING, REPLACED BLADDER,AIR UP BLADDER AND CONTINUE TO TROUBLESHOOT. DOSER FLOW IS 125 ML BOTH NOX SENSORS PASS TEST SCR TEMP IS OUT OF SPEC TROUBLESHOOTING LEADS TO REPLACEMENT OF 1 BOX. MY QUESTION IS THAT REALLY I NEED A ONE BOX OR IS THERE SOMETHING ELSE DEALERSHIP MISSED. TRUCK IS RUNNING OK FOR NOW. DEALER ALSO MENTIONED THAT REGEN IS NOT REACHING OPTIMUM TEMPERATURE AND EFFICIENCY IS ONLY 25% RIGHT NOW
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I changed #### near every part of my DEF system and once i change the ACM harness the light never came back on
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Use pittsburgh power max mileage gets rid of the codes on after treatment
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Sorry didn't know it was posting lol. But that max mileage works I promise. Less regens now just look it up. I run it and will always run it . It makes exhaust burn hotter through the dpf system and slowly cleans it
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That code is gone since I started using it
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2014 Cascadia automatic truck runs fine has all this issues on computer
Can u please help me evaluate repairAttached Files:
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