Engine Oil Pressure Sensor Voltage Invalid
The engine oil pressure sensor is reporting a voltage that is outside of the expected range.
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What it means (plain English)
The oil pressure sensor takes a reading of how much pressure is in the engine oil system and sends a voltage signal to the engine control unit (ECU). If the pressure drops too low or goes too high, or if the sensor fails, the signal can go out of the expected voltage range, triggering this code.
What the computer is actually seeing
The ECU is monitoring the voltage from the oil pressure sensor. If the voltage is below 0.1V or above 4.9V, it may trigger the code, indicating a problem with the sensor or the oil pressure itself.
What a healthy reading looks like
Normal oil pressure should be around 30-60 PSI at idle. Sensor voltage should range from 0.5V (low pressure) to 4.5V (high pressure).
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: If low, top it off and see if the code resets.
- 2Inspect wiring and connectors to the oil pressure sensor for damage or corrosion: Repair as necessary and clear the code.
- 3Test the oil pressure sensor: Use a multimeter to confirm if the sensor outputs between 0.5V and 4.5V under varying pressures. Replace if out of range.
Common causes
- Faulty oil pressure sensor
- Oil level too low
- Blocked oil passages
- Wiring issues or poor connections
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to fix this soon; low oil pressure can cause engine damage.
Will the code come back after repairs?
If the root cause is fixed, it should not return.
Why does this code show up with low oil level?
Low oil level can cause low oil pressure, which the sensor detects.
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