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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 P0170: Fuel Trim (Bank 1) >> Check Intake/Exhaust System For Restriction Or Leakage

Check Intake/Exhaust System For Restriction Or Leakage

  1. Visually/physically inspect the air leakage in intake/exhaust system as following items
    1. Vacuum hoses for splits, kinks and improper connections.
    2. Throttle body gasket.
    3. Gasket between intake manifold and cylinder head.
    4. Seals between intake manifold and fuel injectors.
    5. Exhaust system between HO2S and Three way catalyst for air leakage.
  2. Visually/physically inspect the restriction in intake/exhaust system as following items,
    1. Air cleaner filter element for excessive dirt or for any foreign objects.
    2. Throttle body inlet for damage or for any foreign objects.
    3. Throttle bore, throttle plate and the IAC passages for chocking and for any foreign objects.
    4. Restricted exhaust system
  3. Was a problem found in any of the above areas?

    YES 

    NO 

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