Engine Oil Pressure Extremely Low (Shutdown)
The VOLVO-MACK-SPN100-FMI1 (Volvo/Mack D/MP Series) diesel fault code means: Engine Oil Pressure Extremely Low (Shutdown). This is a critical severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- advanced
- Estimated cost
- $800-$15,000
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View pilot availability →What Are the Symptoms of VOLVO-MACK-SPN100-FMI1?
- Engine shutdown or severe derate in progress
- Oil pressure gauge reading zero or erratic
- Knocking or ticking noise from engine
- Red warning lamp illuminated
What Causes VOLVO-MACK-SPN100-FMI1? (Most Likely First)
- Actual low oil pressure — worn bearings, failed pump, or low level Very Likely
- Stuck pressure relief valve or oil pickup screen clogged Likely
- Failed oil pressure sensor reading falsely low Possible
- Wrong oil viscosity at high temp Possible
- Severe fuel dilution of oil (regen injector leak) Less Likely
Can I Still Drive with VOLVO-MACK-SPN100-FMI1?
No — stop driving. VOLVO-MACK-SPN100-FMI1 is rated critical severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What does Volvo/Mack code SPN100-FMI1 mean?
Volvo/Mack code SPN100-FMI1 (Engine Oil Pressure Extremely Low (Shutdown)) is a critical-severity diagnostic trouble code set on D11/MP7, D13/MP8, and D16/MP10 diesel engines in Volvo VNL/VNR and Mack Anthem/Pinnacle/Granite/Titan trucks. It indicates a fault in the engine lubrication system and should be read with Volvo Premium Tech Tool (PTT) or Mack Guided Diagnostics.
Can I drive a Volvo or Mack truck with code SPN100-FMI1?
No — this fault typically triggers derate or forced engine shutdown countdown. Further operation risks engine damage or stranding. Repair before continuing service.
How much does it cost to fix Volvo/Mack code SPN100-FMI1?
Typical repair falls in the range $800-$15,000. Sensor/wiring repairs are at the low end; EGR cooler, NOx sensor set, DEF pump, injector, or head work runs at the high end. Volvo PTT or Mack Guided Diagnostics is normally required for calibration and parameter programming.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose VOLVO-MACK-SPN100-FMI1?
SHUT DOWN engine immediately when this fault is active; continued operation risks catastrophic bearing damage.
Check engine oil level and condition — look for milky color (coolant) or fuel smell (injector dilution).
Install a mechanical pressure gauge at the sender port and verify actual pressure against spec.
If the sensor and gauge disagree, replace the sensor; if they agree and pressure is low, remove oil pan and inspect pickup and pump.
For D13/MP8 engines with over 500K miles, bearing wear is possible — perform rod and main bearing clearance check if pump and pickup test OK.
Do not restart the engine until actual oil pressure at the block port is confirmed within Volvo/Mack spec.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J1939-73Application Layer: Diagnostics (defines the SPN/FMI fault-identifier framework)
Which Vehicles Commonly Get VOLVO-MACK-SPN100-FMI1?
- Volvo VNL 760/860 with D13
- Volvo VNR 640 with D11/D13
- Mack Anthem with MP8
- Mack Pinnacle with MP7/MP8
- Mack Granite with MP7/MP8
- Mack Titan with MP10
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