Redundant Oil Pressure Sensor Out of Range
The secondary oil pressure sensor is reporting an abnormal reading.
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 has two oil pressure sensors, and this code means the backup sensor is showing a reading that doesn’t match what the primary sensor should see, often indicating a problem with oil flow or pressure.
What the computer is actually seeing
The ECM sees a significant difference between the primary and redundant oil pressure sensors, usually by more than 10 psi under normal operating conditions.
What a healthy reading looks like
Normal oil pressure should range between 25-65 psi while the engine is running at idle, depending on vehicle specifications.
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. Check the engine oil level and quality. Is it low or dirty? If yes, top up or change the oil and retest.
- 22. Inspect wiring and connectors for the redundant oil pressure sensor. Are there any frayed wires or loose connections? If so, repair them and retest.
- 33. Using a scan tool, compare live data from both the primary and redundant oil pressure sensors. Are there discrepancies exceeding 10 psi? If yes, proceed to the next step.
- 44. Replace the redundant oil pressure sensor. Does the code come back after clearing and rechecking? If yes, further diagnosis on the oil system may be needed.
Common causes
- Faulty redundant oil pressure sensor
- Wiring issues between the sensor and ECUs
- Low oil level or oil quality degradation
- Blocked oil passages or oil pump failure
Typical repair cost
$$$-$$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable, but you should fix it soon to avoid engine damage.
Will this problem come back after repair?
If you fix the underlying cause, it should not return.
Why does this code appear with oil pressure warning lights?
Both codes can indicate similar issues with oil pressure or sensor faults, so they can trigger together.
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 →