Engine oil pressure low
The reading is real and it is dangerously low. Low oil pressure, low coolant level and low rail pressure land here. Treat it as a real condition until proven otherwise.
SPN 100 — Engine oil pressure low
SPN 100 is the parameter the ECM is flagging on Volvo, CAT, PACCAR, International engines. The FMI that comes with it tells you how it failed. Each failure mode below has its own causes and its own test order — do not treat them as the same repair.
Low engine oil pressure
The reading is real and it is dangerously low. Low oil pressure, low coolant level and low rail pressure land here. Treat it as a real condition until proven otherwise.
Engine oil pressure critically low
The reading is real and it is dangerously low. Low oil pressure, low coolant level and low rail pressure land here. Treat it as a real condition until proven otherwise.
Oil pressure below critical
Real reading, clearly low. The stage before a derate or shutdown.
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