Oil Level Sensor Failure
The oil level sensor is malfunctioning or disabled.
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 oil level sensor is not working properly, so the computer can't get correct information about how much oil is in the engine.
What the computer is actually seeing
The engine control module (ECM) expects a certain resistance or voltage signal from the oil level sensor. If the signal is out of range (too high or too low), it triggers the fault code.
What a healthy reading looks like
A properly functioning oil level sensor typically provides a voltage range of 0.5V to 4.5V depending on the oil level, with around 2.5V indicating an adequate level.
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. Ensure it is within the specified range (usually between the marks on the dipstick). If low, add oil and retest.
- 22. Inspect the wiring and connectors at the oil level sensor for any visible damage or corrosion. Repair or replace as necessary.
- 33. Measure the voltage at the oil level sensor connector with a multimeter. Expected value is 2.5V for the correct level. If not, trace the wiring back to the ECM for faults.
- 44. If the voltage is correct and the wiring is good, replace the oil level sensor.
- 55. Clear the fault code and test drive the vehicle to see if the code returns.
Common causes
- Faulty oil level sensor
- Wiring issues or short circuits in the sensor circuit
- Connector problems (corroded or loose connections)
- Low engine oil level
- ECM malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but monitor your oil level closely. A low oil level can cause engine damage.
Will the code come back after repairs?
If the repairs are properly made, the code should not return.
Why does this code appear with other sensor codes?
Multiple sensor issues may indicate a wiring or ECM problem affecting several inputs.
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 →