Troubleshooting steps
Check oil level, verify oil pump, check oil filter
Compressor Error Codes
E4 – Oil Pressure Low
Low oil pressure error
Details
Compressor oil pressure is below safe operating level.
Error typeerror
MeaningLow oil pressure
Typical causesLow oil level, oil pump issue, filter blocked
SolutionsCheck oil level, verify oil pump, check oil filter
Severityhigh
Catalog references
Where this appears
SullairE4
Utilities
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FAQ
Common questions
Is damage occurring?
Low oil pressure can cause damage. Check oil system immediately.
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