Engine Oil Pressure Sensor Failed
Engine oil pressure sensor is not reading correctly.
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What it means (plain English)
The oil pressure sensor measures the oil pressure in the engine, and if it fails, it can't send the right information to the computer, which could lead to engine damage if not checked.
What the computer is actually seeing
The Engine Control Module (ECM) sees either no signal or signals that are out of the expected range, meaning the oil pressure is too low or too high to be safe.
What a healthy reading looks like
Normal oil pressure should be between 25 and 65 PSI when the engine is at operating temperature.
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 oil level; should be between the minimum and maximum marks on the dipstick. If low, top off and retest. Decision: If oil level is low, this may fix the issue. If not, proceed to step 2.
- 22. Inspect wiring and connector at the oil pressure sensor for damage or corrosion. Repair as needed. Decision: If repairs are made, clear the code and retest. If the code returns, proceed to step 3.
- 33. Test the oil pressure sensor with a pressure gauge. Disconnect the sensor, install the gauge, and start the engine. You should see pressure between 25 and 65 PSI. Decision: If pressure is normal, replace the sensor. If not, suspect a faulty oil pump or blockage and investigate further.
Common causes
- Faulty oil pressure sensor
- Wiring issues between the sensor and the ECM
- Low oil level or quality problems
- Faulty engine oil pump
- Blockages in oil passages
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive my vehicle with this code active?
It's not recommended as it could lead to engine damage. Address the issue soon.
Will this code come back after I clear it?
It may return if the underlying issue isn't resolved; check wiring and the sensor.
Why does this code sometimes pair with SPN 111?
SPN 111 indicates a failure in the engine oil pressure monitoring circuit, often related to the same sensor or wiring issues.
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