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2014 Volvo VNL670 D13 SPN 5392 fmi 31, SPN 5246 fmi 0 Codes

Inspections List

Inspect DEF level Inspect DEF pump for noise Inspect for DEF leak Inspect DEF pump filter Inspect DEF pump outlet line Inspect pump inlet DEF line Inspect DEF pump inlet line to DEF tank Inspect Doser Valve
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2014 Volvo VNL670 D13 SPN 5392 fmi 31, SPN 5246 fmi 0 Codes

SPN 5392 fmi 31 After treatment diesel exhaust fluid (DEF) pressure build up failure Possible causes: Empty DEF tank DEF filter clogged (most likely the root cause) DEF inlet pipe leak or blockage DEF Pump assembly Spn 5246 fmi 0 means one or more DTC are set active in the after treatment and this code causes a 5 mph derate. Basically, focus on other codes to resolve issue