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    egen light is on truck 2007 gmc coad reader said p2001 what dose it mean

    0  Views: 655 Answers: 1 Posted: 12 years ago

    1 Answer

    P2001 - Oxides of Nitrogen Trap Efficiency Below Threshold Bank 2


    - Sensor or solenoid faulty 
    - Connector terminal contact is damaged or corroded 
    - Wire harness - Check harness for correct voltage, open, short to ground or short to voltage 
    - Update control unit software - Check for the latest control unit update 
    - Powertrain or Engine Control Module faulty 
    - Catalytic converter damage 
    - Catalytic converter improper operation

    http://engine-codes.com/p2001.html 


     



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