DDEC TROUBLESHOOTING
47.1 DESCRIPTION OF FLASH CODE 47
Flash Code 47 indicates that the ECM has detected that the fuel pressure, air inlet pressure, or
turbo boost pressure has exceeded a programmed operating range. This normally occurs due to
a mechanical fault in the air system or fuel system of the engine. See Figure 47-1, for the fuel
pressure sensor.
NOTE:
Not all engines use a fuel pressure sensor.
For gas engines, code 47 indicates that the air inlet pressure has exceeded a calibration limit
programmed in the ECM.
For diesel engines, code 47 indicates that the turbo boost pressure has exceeded a calibration limit
programmed in the ECM.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
47-3
