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Oil Pressure – Engine Protection
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 415 PID: P100 SPN: 100 FMI: 1 LAMP: Engine Protection or Red* SRT: 00-057 |
Voltage signal at oil pressure signal pin 7 of the sensor harness connector indicates oil pressure lower than 55 kPa [8 psi] at idle to 800 rpm; 55 to 172 kPa [8 to 25 psi] at 800 to 2400 rpm. |
Progressive power and speed derate with increasing time after alert. If Engine Protection Shutdown is enabled, the engine will shut down 30 seconds after the engine protection lamp or the Red lamp* begins flashing. |
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Oil Pressure Sensor Circuit |
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Circuit Description
The oil pressure sensor is used by the electronic control module (ECM)
to monitor the lubricating oil pressure. The ECM monitors the voltage on the signal pin and converts this to a pressure value. The oil pressure value is used by the ECM for the engine protection system.
Component Location
- M11 – The oil pressure sensor is located on the engine block to the right of the ECM.
- 1994 N14 – The oil pressure sensor is located on the engine block near the pan rail on the fuel pump side of the engine.
- 1991 N14 – The oil pressure sensor is located on the engine block above the fuel supply pump.
Shop Talk
- Confirm the oil pressure sensor supply voltage is between 4.5 and 5.25 VDC at the sensor.
- Verify with the driver the engine speed at which the fault occurs. If the engine is being operated at too low of a speed under load, the oil pressure can drop below the engine protection limits.
*Applies to 98N14 or 98M11 calibrations only.
Troubleshooting Steps
| STEPS | SPECIFICATIONS | |
|---|---|---|
| STEP 1. | Check the sensor accuracy. | |
| STEP 1A. Verify the sensor accuracy with a mechanical gauge. | Sensor reading is correct | |
| STEP 2. | Clear the fault codes. | |
| STEP 2A. Disable the fault code. | Fault Code 415 inactive | |
| STEP 2B. Clear the inactive fault codes. | All fault codes cleared | |
Guided Step 1 – Check the sensor accuracy.
| Guided Step 1A – Verify the sensor accuracy with a mechanical gauge. | |
|---|---|
Conditions
Action
Note: The engine must be revved up to make it easier to see differences in readings. |
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| OK | NOT OK |
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Sensor reading is correct Refer to the proper base engine manual |
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Fault Code 141
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Guided Step 2 – Clear the fault codes.
| Guided Step 2A – Disable the fault code. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
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Fault Code 415 inactive |
Return to the troubleshooting steps or contact your nearest Cummins Authorized Repair Location if all the steps have been completed and checked again. |
| Guided Step 2B – Clear the inactive fault codes. | |
|---|---|
Conditions
Action
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| OK | NOT OK |
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All fault codes cleared |
Troubleshoot any remaining active fault codes. |
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Repair complete
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Appropriate troubleshooting chart
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