SPACER 3D6648 - Caterpillar

MID 036 CID 0094 FMI 03Conditions Which Generate This Code:The Electronic Control Module (ECM) detects all of the following conditions:
The ECM reads signal voltage that is above 4.95 VDC for eight seconds.
The engine has been running for at least two seconds.
168-01 Low ECM Battery Power is not active.
232-03 5 V Supply Voltage high is not active.
232-04 5 V Supply Voltage low is not active.System Response:The ECM will log the diagnostic code and the ECM will trigger a snapshot. The check engine lamp will illuminate once this diagnostic code has been active for more than ten hours. The ECM will default to 600 kPa (87 psi) for fuel pressure.Note: A fuel pressure that is greater than 1101 kPa (160 psi) (absolute pressure) will also generate this code. The fuel pressure that is displayed on the Caterpillar Electronic Technician (ET) is the default value for fuel pressure minus the atmospheric pressure.Possible Performance Effect:NoneTest Step 1. Perform the following diagnostic procedure: "Engine Pressure Sensor Open or Short Circuit - Test"Results:
OK - STOP