Engine Oil Pressure Sensor Fault
Engine oil pressure is outside normal range or the sensor is faulty.
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What it means (plain English)
The engine oil pressure sensor measures how much pressure the oil pump is generating. If the pressure drops too low or if the sensor malfunctions, this code activates.
What the computer is actually seeing
The engine control module (ECM) monitors the oil pressure sensor's input, looking for a range typically between 25 to 80 PSI at normal operating temperature. When the pressure falls below 10 PSI or above 100 PSI for a sustained period, or if the sensor signal is erratic or out of range, it triggers the fault code.
What a healthy reading looks like
Normal oil pressure readings should be between 25 and 80 PSI at operating temperature; readings below 10 PSI or above 100 PSI can trigger the code.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the engine oil level and condition. Ensure it's full and free from contamination.
- 22. Inspect the wiring and connector to the oil pressure sensor for damage or corrosion. Repair as needed.
- 33. Measure the actual oil pressure using a mechanical gauge; it should show between 25 and 80 PSI. If not, find out if the oil pump is malfunctioning.
- 44. If oil pressure is normal at the gauge but the code persists, replace the oil pressure sensor and clear the code. Monitor for recurrence.
- 55. If the code returns again, suspect ECM issues or further electrical faults.
Common causes
- Faulty oil pressure sensor
- Oil level too low
- Oil pump failure
- Electrical issues (shorts, opens) in wiring
- Faulty ECM
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive my vehicle if this code is active?
It's not advisable to drive if the engine oil pressure is low, as it can cause severe engine damage.
Will this code come back after I clear it?
If the underlying issue isn't fixed, yes, it will likely reappear.
Why does this code pair with other codes?
It can indicate related issues, like sensor performance or oil system problems affecting multiple systems.
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