Error code

OBD2 P2027

OBD2P2027
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit High Voltage.

Severity

moderateCan drive but may experience reduced performance and potential emissions issues.

Summary

P2027 indicates an issue with the evaporative emissions fuel vapor temperature sensor circuit showing high voltage. This sensor is part of the EVAP system and helps detect leaks by measuring fuel vapor temperature.

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors
  • Defective fuel vapor temperature sensor
  • Failure of a reference voltage circuit affecting multiple sensors
  • Failed or failing PCM (rare)

Diagnosis

  1. Check for damaged, burnt, shorted, disconnected, or corroded wiring and connectors.
  2. Inspect the fuel vapor temperature sensor for defects.
  3. Verify reference voltage circuit integrity if multiple sensors are affected.
  4. Consider PCM failure as a last resort (rare).

Fixes

  • Replace damaged wiring/connectors or faulty fuel vapor temperature sensor.

FAQ

What does P2027 mean?

P2027 indicates a high voltage issue in the evaporative emissions (EVAP) fuel vapor temperature sensor circuit.

How do I fix P2027?

Fixes include replacing damaged wiring/connectors or a faulty fuel vapor temperature sensor. Ensure to check reference voltage circuits if multiple sensors are affected.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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