Powertrain
Definition only
Lights the check engine lamp
P2028: EVAP Fuel Vapor Temperature Sensor Circuit Intermittent
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2028 mean?
The EVAP fuel-vapor temperature sensor signal jumps or drops out intermittently — usually a connector or chafed wire.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Common causes
- High Intermittent connector or chafed wire
- Low Connector with intermittent contact under vibration
- Low Harness routed against vibrating component
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2028 on the same make and model first.
P2028 in the community
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