Oil Pressure Sensor Circuit Low
Indicates low oil pressure detected by sensor.
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What it means (plain English)
The oil pressure sensor measures how much oil pressure is in your engine. When it says 'low', it means the pressure is below what the engine needs to run properly, which can cause serious damage.
What the computer is actually seeing
The engine control module (ECM) receives a voltage signal from the oil pressure sensor. A normal reading should be between 0.5 to 4.5 volts. If the voltage drops below 0.5 volts, the code SPN 4767 is triggered.
What a healthy reading looks like
Oil pressure should be between 20-60 PSI at idle when the engine is at operating temperature.
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; ensure it's within the safe range. If low, refill and retest.
- 22. Inspect the wiring and connectors to the oil pressure sensor for damage or corrosion. Repair as needed and retest.
- 33. Using a multimeter, check the voltage at the oil pressure sensor. It should be between 0.5-4.5 volts. If it's below 0.5 volts, the sensor is likely faulty, replace it.
- 44. If the sensor voltage is normal, remove the oil pressure sensor and manually check oil pressure with a mechanical gauge. Compare values to expected specs.
Common causes
- Low oil level in the crankcase
- Faulty oil pressure sensor
- Oil pump failure
- Clogged oil passages
- Wiring or connector issues at the oil pressure sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Not recommended; low oil pressure can damage the engine.
Will this code come back after clearing?
Yes, if the underlying issue isn't fixed, the code will likely reappear.
Why does this code pair with other codes?
It often indicates a systemic issue with the oil system that can affect multiple parameters.
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