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Home >> Hyundai >> 2004 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Trouble Shooting Procedures >> DTC P1166: O2 Sensor System Lambda Bank Controller At The Limit (Bank 1) >> Inspection Procedures >> 7. Check Front HO2S

7. Check Front HO2S

  1. Temporarily install a good HO2S and check for proper operation.

Is problem corrected? 

No: Go to next step.

Yes: Replace it.

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