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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 >> 8. Check ECM Input Signals Relating To MAFS, TPS, & ECTS
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8. Check ECM Input Signals Relating To MAFS, TPS, & ECTS

  1. Check for ECM input signals from the MAFS, TPS, and ECTS.

Are input signals normal? 

Yes: Proceed with ECM problem procedure. Go to

No: Replace all failed parts.

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