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Detroit DD13 EPA07 (2007-09) Fault Code: SPN 157 FMI 2 (MCM) Erratic Fuel Rail Pressure Sensor Signal

NOTE: The ECM monitors the rail pressure and when it changes more than 200 bar for 8 seconds the code is set.

PROBABLE CAUSES:1. Fuel rail pressure sensor connector/harness.2. Fuel rail pressure sensor.3. Failed Quantity Control Valve.4. Failed ECM.

Detroit DD13 EPA07 (2007-09) Fault Code: SPN 157 FMI 1 (MCM) Fault of the Fuel Rail Pressure Sensor, Wiring, or Quantity Control Valve
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