DDEC TROUBLESHOOTING
38.1 DESCRIPTION OF FLASH CODE 38
Flash Code 38 indicates that the engine Fuel Pressure Sensor (FPS), see Figure 38-1, input to the
ECM has dropped below 5% (normally < 0.25 volts) of the sensor supply voltage.
This diagnostic condition is typically:
Open sensor signal circuit
Open sensor +5 volt supply circuit
Sensor signal is shorted to sensor return circuit or to ground
Sensor +5 volt supply is shorted to the sensor return circuit
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
38-3
