SPN 100 - FMI 2 (Fault Code 435)
Tuesday, July 10, 2018
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SPN100 FMI2
Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
CODES:
Fault Code: 435
PID(P), SID(S): P100
SPN: 100
FMI: 2/2
Lamp: Amber
REASON: The engine oil pressure sensor is reading an erratic value.
EFFECT: None on performance.
Circuit Description:
An engine oil pressure switch or oil pressure sensor is used by the engine control module (ECM) to monitor the lubricating oil pressure. For engines with an oil pressure switch, the switch is normally closed when the engine is not running and open when oil pressure is present. For engines with an oil pressure sensor, the ECM will detect a low signal voltage at operating conditions when the oil pressure is low. The ECM will detect a high signal voltage at operating conditions when the oil pressure is high.
Component Location:
The engine oil pressure sensor is located in the oil rifle.
Conditions for Running the Diagnostics:
-This diagnostic runs when the keyswitch is turned ON and before engine speed is detected.
-The diagnostic only runs once per trip.
Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine oil pressure reading was higher or lower than the other absolute pressure sensors on the engine after the keyswitch has been turned OFF and the engine has stopped running.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE lamp and/or malfunction indicator lamp (MIL) after the diagnostic fails on two consecutive trips.
• A default value for the engine oil pressure reading is used.
Conditions for Clearing the Fault Code:
• To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
• The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
• The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
• The “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
Shop Talk:
Possible causes of this fault code include:
High resistance in the engine harness.
• Malfunctioning engine oil pressure sensor.
• A malfunctioning oil pressure relief valve.
• Malfunctioning oil pump.
Read More:
SPN 157 - FMI 0 (Fault Code 449)
SPN 157 - FMI 3 (Fault Code 451)
Blog.Teknisi
Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
 |
| Engine Oil Rifle Pressure Sensor Circuit |
CODES:
Fault Code: 435
PID(P), SID(S): P100
SPN: 100
FMI: 2/2
Lamp: Amber
REASON: The engine oil pressure sensor is reading an erratic value.
EFFECT: None on performance.
Circuit Description:
An engine oil pressure switch or oil pressure sensor is used by the engine control module (ECM) to monitor the lubricating oil pressure. For engines with an oil pressure switch, the switch is normally closed when the engine is not running and open when oil pressure is present. For engines with an oil pressure sensor, the ECM will detect a low signal voltage at operating conditions when the oil pressure is low. The ECM will detect a high signal voltage at operating conditions when the oil pressure is high.
Component Location:
The engine oil pressure sensor is located in the oil rifle.
Conditions for Running the Diagnostics:
-This diagnostic runs when the keyswitch is turned ON and before engine speed is detected.
-The diagnostic only runs once per trip.
Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine oil pressure reading was higher or lower than the other absolute pressure sensors on the engine after the keyswitch has been turned OFF and the engine has stopped running.
Action Taken When the Fault Code is Active:
• The ECM illuminates the amber CHECK ENGINE lamp and/or malfunction indicator lamp (MIL) after the diagnostic fails on two consecutive trips.
• A default value for the engine oil pressure reading is used.
Conditions for Clearing the Fault Code:
• To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
• The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
• The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
• The “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
Shop Talk:
Possible causes of this fault code include:
High resistance in the engine harness.
• Malfunctioning engine oil pressure sensor.
• A malfunctioning oil pressure relief valve.
• Malfunctioning oil pump.
Read More:
SPN 157 - FMI 0 (Fault Code 449)
SPN 157 - FMI 3 (Fault Code 451)
Blog.Teknisi
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