OBD-II code · Powertrain (generic, extended)
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+.
Is it safe to drive with P2027?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen signal line
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Evap Fuel Vapor Temp Sensor
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.