DDEC TROUBLESHOOTING
37.1 DESCRIPTION OF FLASH CODE 37
Flash Code 37 indicates that the engine Fuel Pressure Sensor (FPS), see Figure 37-1, input to the
ECM has exceeded 95% (normally >4.75 volts) of the sensor supply voltage.
This diagnostic condition is typically:
Open sensor return circuit
Sensor signal circuit is shorted to the sensor +5 volt supply
NOTE:
Require fuel pressure >60 psi.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
37-3
