Oil Pressure Sensor Circuit Low
This code indicates low voltage output from the oil pressure sensor.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
Inside the engine, there's an oil pressure sensor that measures how much oil pressure is in the system. If the sensor sends a voltage reading below 0.5 volts, it means there's a problem, likely low oil pressure or a sensor issue.
What the computer is actually seeing
The engine control module (ECM) expects the oil pressure sensor to signal a voltage between 0.5 to 4.5 volts based on the oil pressure. Anything lower than 0.5 volts is flagged as a fault.
What a healthy reading looks like
Normal oil pressure ranges from 30 to 70 PSI at operating temperature, corresponding to sensor voltages typically above 0.5 volts.
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.
- 1Check engine oil level and condition, should be within the dipstick range and not dirty or contaminated. If low, top off and retest.
- 2Inspect the wiring and connector at the oil pressure sensor for any damage, corrosion, or loose connections.
- 3Using a multimeter, check the voltage at the oil pressure sensor connector. It should be above 0.5 volts with the engine running. If it's low, replace the sensor.
- 4If the sensor voltage is normal, check the oil pressure using a mechanical gauge to confirm if actual oil pressure is low. If low, inspect the oil pump and internal engine components.
Common causes
- Low engine oil level
- Faulty oil pressure sensor
- Wiring harness issues
- Oil filter blockage
- Oil pump malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s not recommended to drive as it may indicate low oil pressure, which can cause serious engine damage.
Will this code return after fixing?
If the underlying cause is resolved, the code should clear and not return.
Why is this code paired with other oil pressure codes?
It indicates multiple issues with oil pressure monitoring or the oiling system.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →