Engine Oil Pressure Sensor Circuit
Indicates an issue with the engine oil pressure sensor circuit.
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)
The engine oil pressure sensor is not reading the correct oil pressure. For instance, it should show around 25-65 psi when the engine is running, but it's out of this range or has a wiring issue.
What the computer is actually seeing
The engine control unit (ECU) expects a stable voltage signal from the oil pressure sensor, typically between 0.5 to 4.5 volts, corresponding to the oil pressure. If the signal is too low, too high, or unstable, the code will trigger.
What a healthy reading looks like
Oil pressure should be between 25-65 psi at normal operating temperatures.
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; it should be within the recommended range. If low, top up and retest.
- 2Inspect wiring and connectors between the ECU and oil pressure sensor for damage or corrosion.
- 3Measure the voltage at the oil pressure sensor connector with the engine running; it should fall between 0.5 - 4.5 volts. If it's outside this range, further investigate the sensor or wiring.
- 4Check for the presence of oil pressure using an alternate gauge to confirm sensor readings.
Common causes
- Faulty engine oil pressure sensor
- Wiring issues (shorts or opens)
- Low oil level
- Oil pump failure
- Clogged oil passages
Typical repair cost
$$$ (200-600)
Related codes
Frequently asked questions
Can I drive with this code active?
It's not advisable; low oil pressure can cause engine damage.
Will this code come back after clearing?
If the underlying issue isn't fixed, it will likely return.
Why might this code appear after an oil change?
Incorrect oil type or level can affect pressure; also, air in the system may temporarily alter readings.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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