P0178 OBD II Trouble Code Fuel Composition Sensor Circuit Low Input

Symptoms of P0178 OBD II Trouble Code

  • Increased fuel consumption
  • Poor performance
  • Check Engine Light illuminated
  • Engine stalls

Common Causes of P0178 OBD II Trouble Code

  • Faulty Fuel Cap
  • Contaminated fuel
  • Faulty Fuel Composition Sensor
  • Corroded or damaged connector
  • Damaged or restricted fuel line
  • Faulty or damaged wiring
  • Faulty ECM

Severity of P0178 OBD II Trouble Code

The severity of this code is moderate.