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2017 HYUNDAI TUCSON

2.5L I4AWDAUTOMATICgas
3 active safety recalls on this vehicle — view recalls
Repairs449Labor515Torque3924Fluid9DTC921Battery0Maintenance0Recalls3
P0177low severityPowertrain

Fuel Composition Sensor Circuit Range/Performance

on 2017 Hyundai Tucson 2.5L I4 · AWD

What this code means

The fuel composition sensor reading is outside expected range.

Symptoms

  • Check Engine Light
  • Incorrect fueling

Common causes

  • Contaminated sensor
  • Sensor calibration issue
  • Mixed fuel types

Diagnostic steps

  1. Compare sensor reading to known fuel type
  2. Test sensor output range

Repair notes

Replace sensor.

Other Powertrain codes on this vehicle

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