16561/P0177/000375

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16561/P0177/000375 - Sensor for Fuel Composition / Quality (G446): Implausible Signal

Possible Symptoms

  • Possible reduced engine performance
  • Check Engine Light
  • Decreased fuel efficiency

Possible Causes

  • Faulty Fuel Quality Sensor (G446)
  • Excessive Ethanol Blends
  • Wiring and or connection issues

Possible Solutions

  • Check Fuel Quality Sensor (G446)
  • Check wiring, connections for damage/corrosion
  • Verify Ethanol content in fuel

Special Notes

  • The code P0177 sets when when a significant increase in ethanol content in the fuel, (This change occurs quickly, within 200 milliseconds.)
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