Engine Temperature - Oil Temperature Too Low
Indicates that the oil temperature is below acceptable levels.
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 in the engine isn't warming up enough, which can cause poor lubrication leading to wear or damage.
What the computer is actually seeing
The ECM (Electronic Control Module) is reading the oil temperature sensor voltage as being below the minimum threshold, usually around 70°F (21°C).
What a healthy reading looks like
Oil temperature should be between 180°F (82°C) to 250°F (121°C) in normal operating conditions.
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 oil level (should be within range). If low, top off and reassess the code after a short run.
- 22. Inspect the oil temperature sensor wiring and connector for damage or corrosion. Repair if necessary and retest.
- 33. Measure the oil temperature with an external gauge. If it's within expected values but the code persists, replace the oil temperature sensor and retest.
- 44. Clear the fault codes and run the engine until normal operating temperature is reached. If the code reappears, further investigation is needed.
Common causes
- Faulty oil temperature sensor
- Wiring or connector issues
- Low oil level or incorrect oil type
- Coolant leaking into oil, causing dilution
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Yes, but it's recommended to address it soon to prevent engine wear.
Will this code come back after resetting?
If the underlying issue isn't resolved, yes, it will likely return.
Why does this code sometimes pair with SPN 770?
SPN 770 is related to engine coolant temperature; both can indicate temperature-related issues within the engine.
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 →