P0195 Code: Engine Oil Temperature Sensor A Circuit Malfunction
🟢 Low severity · drivable
Yes, the engine will usually run normally, but oil temperature monitoring is lost — get it checked soon.
What P0195 means
The engine oil temperature sensor tells the computer how hot the oil is, which helps with oil-life monitoring and engine protection. This code means the sensor circuit has an electrical fault. The engine will usually keep running normally, but the computer may lose the oil temperature reading.
Symptoms
- Check engine light on
- Oil temperature gauge reading missing or stuck
- Oil life monitor acting up
Common causes
- most common: Faulty oil temperature sensor
- common: Damaged wiring or connector in the sensor circuit
- less common: Corroded connector pins
- rare: Engine computer (PCM) fault
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the engine oil temperature sensor | Yes | $30–100 |
| Inspect and repair the sensor wiring or connector | Yes | $15–80 |
Frequently asked questions
Can I drive with a P0195 code?
Yes. The engine will usually run normally, but the oil temperature reading and oil-life monitor won't work properly until it's fixed.
What does the engine oil temperature sensor do?
It measures oil temperature so the computer can monitor oil life and protect the engine from overheating oil.
How much does it cost to fix a P0195?
A new sensor is usually $30–100, and wiring repairs are typically $15–80.
Related codes
P0196
P0196 Code: Engine Oil Temperature Sensor Range/Performance
P0197P0197 Code: Engine Oil Temperature Sensor Circuit Low
P0198P0198 Code: Engine Oil Temperature Sensor Circuit High
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.