P2025
EVAP Fuel Vapor Temperature Sensor Performance
EVAP (emissions)
Generic OBD-II
Low
What it means
P2025 means the evaporative emissions (EVAP) fuel vapor temperature sensor is not reading correctly — its signal is out of range or does not match actual conditions. The engine runs normally; the code mainly affects the EVAP leak-detection monitor. Verify the reading with a scan tool and check the wiring before replacing the sensor.
Low
Can I keep driving? Safe to drive — this is an emissions-monitoring sensor with no effect on how the engine runs.
Common symptoms
What you'll notice
- Check-engine light on
- No noticeable change in how the vehicle drives
- May block completion of the EVAP readiness monitor (relevant for emissions testing)
Common causes
Most likely first
- Faulty EVAP fuel vapor temperature sensorLikely
- Sensor reading out of range or drifting from actual temperatureCommon
- Wiring open or shorted in the sensor circuitCommon
- Corroded or loose connectorLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and view the vapor temperature sensor reading with a scan tool.
- Compare the sensor reading to actual ambient/tank temperature when cold — a large mismatch confirms a bad sensor.
- Inspect the connector and wiring for opens, shorts, or corrosion; repair as needed.
- Replace the fuel vapor temperature sensor if it reads out of range with good wiring.
FAQ
Quick answers
Is it safe to drive with P2025?+
Yes. It is an EVAP monitoring fault with no impact on drivability. Fix it mainly to keep emissions monitors working and pass inspection.
Can I just clear P2025?+
It will come back once the monitor runs again unless the sensor or wiring is repaired.
Related codes
Often seen with P2025
Read & clear P2025 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX