Lubricating Oil Pressure Low
|
Symptom |
Possible Cause |
Action |
Reference |
|
Lubricating Oil Pressure Low |
Active DTCs or high counts of inactive DTCs |
Check for active and inactive DTCs. |
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Oil level is above or below specification |
Check the oil level. Add or drain oil, if necessary. |
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Oil pressure switch is malfunctioning. |
Measure the lubricating oil pressure. Measure and monitor the oil pressure with CONSULT. If necessary replace the oil pressure switch. |
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Oil pressure switch is blocked |
Check if sealant is blocking the oil pressure switch port. |
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Lubricating Oil leak (external) |
Inspect the engine for external oil leaks. Tighten bolts and fittings. Replace gaskets, if necessary. |
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Lubricating oil does not meet specifications for operating conditions |
Change the oil and oil filter. |
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Lubricating oil is contaminated with coolant or fuel |
Refer to the Lubricating Oil Contaminated symptom diagnosis. |
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Engine angularity during operation excessive |
Operate vehicle on a level surface and re-check. |
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Oil pressure regulator (main rifle) is malfunctioning |
Check the oil pressure regulator (main rifle) assembly. Replace if necessary. |
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Oil cooler is plugged |
Check the oil cooler. |
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Oil temperature is above specification |
Refer to the Lubricating Oil Temperature Above Specifications symptom diagnosis. |
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Oil suction tube is loose or broken, or O-rings are leaking |
Remove and inspect the oil pan suction tube. |
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Oil pump is malfunctioning |
Inspect the oil pump. Replace if necessary. |
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Piston cooling nozzles are damaged or are not installed correctly |
Check the piston cooling nozzles for damage and correct installation. |
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Internal engine damage or internal lubricating oil leak |
Analyze the lubricating oil. Inspect the oil filter. Places for probable damage include main bearings, rod bearings, cam bearings, and rocker arms. |