Engine Oil Pressure Sensor Circuit High
Indicates high voltage or resistance in the engine oil pressure sensor circuit.
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What it means (plain English)
The engine oil pressure sensor measures the oil pressure, and when it sees a voltage around 4.5 volts (high), it thinks there's a problem with the oil pressure, which can affect engine lubrication.
What the computer is actually seeing
The ECM detects that the voltage signal from the oil pressure sensor is above a predetermined threshold which typically indicates either a wiring issue or an excessively high oil pressure condition if the oil system is functioning correctly.
What a healthy reading looks like
Normal oil pressure should produce sensor outputs of about 0.5 to 4.5 volts depending on the actual pressure; typical engine oil pressure at idle is around 10-20 PSI and can go up to 40+ PSI at higher RPMs.
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 connectors of the engine oil pressure sensor for damage or corrosion.
- 22. Check the oil level and ensure it is within the recommended range; low oil can cause pressure issues.
- 33. Using a multimeter, measure the voltage at the oil pressure sensor connector with the ignition on (engine off); expected should be around 0.5 to 4.5 volts.
- 44. If the voltage is too high (above 4.5 volts), check the wiring for a short to power; if it's good, replace the sensor.
- 55. If the sensor voltage and wiring are good, start the engine and measure the actual oil pressure using a mechanical gauge; it should match the ECU's readings.
Common causes
- Wiring issues in the sensor circuit
- Faulty oil pressure sensor
- Engine oil pressure too high due to wrong oil viscosity
- Faulty engine oil pump
Typical repair cost
$$$ - $$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not ideal; the oil pressure is critical for engine health, so address it soon.
Will the code come back after clearing it?
If the issue is present (like a bad sensor or high oil pressure), it will likely return.
Why does this code pair with SPN 6706?
SPN 6706 indicates low voltage in the oil pressure circuit, while 6707 indicates high voltage, both arising from faulty wiring or sensor issues.
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