This diagnostic code is for the pressure sensor (engine oil).
The engine ECM monitors the engine oil pressure in order to protect the engine in case of a problem with the oil pressure. The oil pressure sensor is mounted on an oil gallery on the engine. The exact location of the engine oil pressure sensor varies depending on the engine model. The GSC monitors the oil pressure that is read by the engine ECM.
The possible causes of this diagnostic code are listed below:
- There is an open in the circuit for the CAT data link. The open is between the engine ECM and the GSC.
- There is a short or a failure in the oil pressure sensor that is connected to the engine ECM.
The GSC issues a CID 0100 FMI 02 in order to show that the GSC is unable to receive any valid data about the oil pressure from the engine ECM.
The sensor is connected to the engine ECM. The engine ECM sends data about the oil pressure to the GSC via the CAT data link. Refer to Troubleshooting, SENR1003, "3500B EPG Engines" or Troubleshooting, RENR2227, "3406E EPG Engines" for more information on the oil pressure sensor for the engine ECM.
System Response:
Note: The GSC is usually programmed to treat a problem with the oil pressure sensor as an alarm fault. SetpointP04 is 0. If the GSC is programmed to treat a problem with the oil pressure sensor as a shutdown fault, setpoint P04 is 1. Then, it is not necessary to press the alarm code key in order to view the CID FMI. The diagnostic codes are automatically shown on the upper display.
Test Step 1. VERIFY THE DIAGNOSTIC CODE.
View the diagnostic code that is displayed on the upper display panel of the EMCP II. Determine if the diagnostic code is originating from the Engine ECM.
Expected Result:
There is a letter "E" after the number of the CID that is on the upper display panel of the EMCP II.
Results:
- YES - There is a letter "E" after the number of the CID that is on the upper display panel of the EMCP II .
Repair: Troubleshoot the diagnostic code for the Engine ECM. Refer to Troubleshooting, SENR1003, "3500B EPG Engines" or Troubleshooting, RENR2227, "3406E EPG Engines" for information on troubleshooting the diagnostic code.
Stop.
- NO - There is not a letter "E" after the number of the CID that is on the upper display panel of the EMCP II .
Repair: There may be a problem with the CAT Data Link. Determine if CID 0248 FMI 09 is present. Refer to Diagnostic Code Procedures, "GSC CID 0248 - FMI 09".
Stop.