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Home >> Hyundai >> 2005 >> Elantra GLS, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Troubleshooting Procedures >> DTC P0139: Ho2S Circuit Slow Response >> Fuel Injector Inspection

Fuel Injector Inspection

  1. Ignition "OFF"
  2. Check the fuel injectors for clogging or any restrictions.

    Specification : No clogging and restriction

  3. Is the fuel injector OK?

    YES 

    NO 

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