Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4156 PID: SPN: 5746 FMI: 4 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Heater Relay Circuit- Voltage Below Normal or Shorted to Low Source
Circuit DescriptionThe aftertreatment diesel exhaust fluid dosing unit heater relay is used to provide power to the aftertreatment diesel exhaust...
