What Does P2025 Mean?
DTC P2025 indicates the EVAP fuel vapor temperature sensor is electrically functional but not performing within expected parameters. The ECM monitors the sensor readings over time and under various conditions, and sets this code when the sensor response is sluggish, does not change when expected, or reads values that are inconsistent with ambient conditions and EVAP system operation.
Common Causes
35%
Degraded EVAP fuel vapor temperature sensor with slow response
25%
Sensor contamination from fuel vapor deposits affecting thermal response
15%
Sensor installed in incorrect location or with poor thermal contact
15%
Intermittent connector issue causing inconsistent sensor readings
10%
EVAP system leak or canister saturation affecting vapor temperatures
Diagnostic Steps
1
Monitor the EVAP fuel vapor temperature sensor PID over a cold-start warm-up cycle; it should gradually approach engine bay ambient temperature.
2
Compare the EVAP vapor temperature reading with the intake air temperature and ambient temperature sensors; large discrepancies suggest sensor error.
3
Inspect the sensor for fuel deposit contamination or physical damage that could insulate its sensing element.
4
Verify no EVAP system leaks or canister saturation conditions exist that could introduce abnormal temperature behavior.
5
If the sensor reads consistently but inaccurately, replace it and verify the new sensor tracks temperature changes appropriately.
Estimated Repair Cost
$80 - $300
Parts + labor, varies by vehicle and location
DTC P2025 indicates the EVAP fuel vapor temperature sensor is electrically functional but not performing within expected parameters. The ECM monitors the sensor readings over time and under various conditions, and sets this code when the sensor response is sluggish, does not change when expected, or...
The most common cause of P2025 (Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Performance) is: Degraded EVAP fuel vapor temperature sensor with slow response
Typical repair costs for P2025 range from $80 to $300, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety concern. The EVAP purge strategy may be slightly less precise, but the vehicle operates normally. This is primarily an emissions-related code.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2025 to identify the root cause.
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Quick Info
Category
Powertrain
System
Evaporative Emissions (EVAP)
Difficulty
Type
Generic (SAE)
Recommended Tools
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