Engine Oil Pressure Sensor Voltage High
The engine oil pressure sensor is reporting a voltage that is higher than expected.
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What it means (plain English)
The sensor that measures oil pressure is sending a signal to the computer that suggests the pressure is too high, possibly due to electrical issues or an actual oil pressure problem.
What the computer is actually seeing
The engine control module (ECM) sees a voltage reading from the oil pressure sensor that is above the normal range, typically above 4.5 volts, when it should be around 1.0 to 4.0 volts under normal conditions.
What a healthy reading looks like
Normal oil pressure voltage should read between 1.0 to 4.0 volts; over 4.5 volts indicates a fault.
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. Inspect the wiring and connector of the oil pressure sensor for damage or corrosion. If damaged, repair or replace as necessary. Decision Point: If repair resolves the issue, no further action needed. If still present, proceed to step 2.
- 22. Using a digital multimeter, check the voltage at the oil pressure sensor connector with the engine running. Expected voltage is between 1.0 to 4.0 volts. Decision Point: If voltage is above 4.5 volts, proceed to step 3. If within normal range, suspect ECM issue or faulty calibration.
- 33. Replace the oil pressure sensor and clear the fault codes. Decision Point: If the code returns after replacing the sensor, investigate wiring and connections further.
Common causes
- Faulty oil pressure sensor
- Wiring or connector issues
- Oil overfill
- Defective engine oil pump
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive with this fault code?
It's drivable, but get it checked soon to avoid potential engine damage.
Will this code come back after repairs?
If the sensor is faulty or the wiring is bad, it may return.
Why does this code appear alongside SPN 0667?
SPN 0667 indicates low oil pressure, so both codes may be linked to issues with the oil pressure sensor.
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