P2266 OBD II Trouble Code Water in Fuel Sensor Circuit Low

How to quickly diagnose and repair, and causes of a P2266 electrical code which indicates a detected too low of electrical value within the water in fuel sensor circuit.

Symptoms of P2266 OBD II Trouble Code

  • Engine may stall
  • Severe misfiring
  • Engine will not start
  • Poor fuel economy
  • Poor performance
  • Check engine light illuminated
  • Water in fuel light illuminated

Common Causes of P2266 OBD II Trouble Code

  • Defective water in fuel sensor
  • Contaminated fuel
  • Blown fuse or fuse-able link (if applicable)
  • Defective or worn fuel filter
  • Corroded or damaged connector
  • Faulty or damaged wiring
  • Faulty ECU

Severity of P2266 OBD II Trouble Code

The severity of this code can vary tremendously from just an illuminated check engine light or water in fuel light on a vehicle that starts and runs to an automobile that will stall, misfire or not start at all. Damage to fuel system and internal engine components may occur if this situation is not corrected in a timely manner.