P2027: EVAP Fuel Vapor Temperature Sensor Circuit High Voltage
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2027 mean?
The EVAP fuel-vapor temperature sensor signal sits above the upper plausibility limit — open signal line, broken sensor, or short to B+.
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 Open signal line
- Low Connector pins corroded - high contact resistance
- Low Supply wire pinched against B+ source
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2027 on the same make and model first.
P2027 in the community
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