Powertrain
generic / SAE
P2027
EVAP Fuel Vapor Temperature Sensor Circuit High Voltage
The EVAP fuel-vapor temperature sensor signal sits above the upper plausibility limit — open signal line, broken sensor, or short to B+.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / 27
Possible causes
- Open signal line high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 40–300 €
- Estimated time: 0.5–2 h
- Component: evap fuel vapor temp sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012