Engine Oil Pressure Sensor Failure
The engine oil pressure sensor has detected an abnormal pressure reading.
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What it means (plain English)
The engine oil pressure sensor measures the oil pressure to ensure the engine is receiving proper lubrication. If it fails or reads incorrectly, it can trigger this fault.
What the computer is actually seeing
The engine control module (ECM) expects the oil pressure signal to be within a range of 5 to 60 PSI during normal operation. If the signal drops below 5 PSI or exceeds 60 PSI, the fault is triggered.
What a healthy reading looks like
Normal oil pressure should be between 25 and 55 PSI when the engine is at operating temperature, idle.
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 using the dipstick. If low, add oil and retest.
- 22. Inspect the wiring and connectors to the oil pressure sensor for damage or corrosion. Repair as needed.
- 33. Use a scan tool to monitor live data. Check the oil pressure readings. If it fluctuates wildly or stays at zero, proceed to the next step.
- 44. Test the oil pressure sensor using a multimeter. Expected voltage output should vary between 0.5V (low pressure) and 4.5V (high pressure). If not in range, replace the sensor.
- 55. If the sensor checks out, install a mechanical oil pressure gauge to confirm actual oil pressure. If the gauge reads low, investigate for oil pump issues or internal engine damage.
Common causes
- Bad oil pressure sensor
- Low engine oil level
- Oil pump failure
- Blocked oil passages
- Electrical wiring issues or connector problems
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s not recommended to drive with SPN 4516 active as it may indicate low oil pressure, risking engine damage.
Will the fault code come back after clearing it?
If the underlying issue is not fixed (like sensor or wiring), the code will likely reappear.
What should I do if I get this code right after an oil change?
Check to ensure the correct oil was used and the proper amount was added; also inspect for any loose connections.
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