P2025
EVAP Fuel Vapor Temperature Sensor Performance
The EVAP fuel-vapor temperature sensor reading is plausible but does not match expected behaviour over time or temperature — slow response, incorrect offset, or stuck reading.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Common causes
Ordered by how often each turns out to be the cause.
- Sensor drift over service lifeCommon
- Sensor element aged beyond calibration windowLess likely
- Sensor element contaminated by oil, soot or coolantLess likely
Parts involved
- EVAP Fuel Vapor Temp Sensor
P2025 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.