Uncontrolled Oil Pressure Condition
Indicates an abnormal oil pressure reading from the engine's oil pressure sensor.
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What it means (plain English)
The sensor is seeing oil pressure levels that are outside normal limits, which could mean there's too much or too little oil pressure in the system, risking engine damage.
What the computer is actually seeing
The engine control module (ECM) reads oil pressures via the sensor and flags this code if the value deviates significantly from expected thresholds, typically 5-60 PSI under normal operating conditions.
What a healthy reading looks like
Normal oil pressure should be between 25-75 PSI at operating temperature. Below 10 PSI or above 80 PSI may trigger a warning.
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. It should be between the min and max marks on the dipstick. If low, add oil and retest.
- 22. Inspect the oil pressure sensor wiring and connector for damage or corrosion. Repair as necessary and retest.
- 33. Connect a mechanical oil pressure gauge to the engine to get a real oil pressure reading; compare this with the spec.
- 44. If the manual gauge confirms abnormal pressure, check the oil pump functionality and condition of the oil filter.
- 55. If pressures are normal, replace the oil pressure sensor and clear the code.
Common causes
- Faulty oil pressure sensor
- Low engine oil level
- Oil pump failure
- Clogged oil filter
- Wiring issue with the oil pressure sensor
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
No, this code indicates a high risk of engine damage due to improper oil pressure; avoid driving until resolved.
Will this code come back after repair?
If the underlying issue is fixed, and the repair is done correctly, the code should not return.
Why might this code pair with SPN 6370?
SPN 6370 relates to a general oil pressure fault, and both codes can trigger from similar oil pressure issues.
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