Question about 2004 Chevrolet Impala

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What is a HTR on a chevy impala - 2004 Chevrolet Impala

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  • Justin Scott Apr 21, 2014

    Hi melvin , I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?

  • Mel Seaborne May 08, 2014

    my scanner has flashing short forms of words on it one was htr,egr,cat,o2s.eva flashing at the top I dont know if that is what is wrong or if that is what it is checking . this is aOND2 scan tool

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If you are referencing an OBDll code it means (heater) on an oxygen sensor
saailer

Posted on May 08, 2014

  • David Burbee
    David Burbee May 08, 2014

    An On Board Diagnostic ll (OBDII) scanner will give you the code or codes which indicate what the problem is...First: Is the check engine light on? If so a trouble code or codes are stored...I need to know what the codes are...I'm unclear as to what type of scanner your using but codes are obviously stored...What you are seeing are HTR (heater for Oxygen Sensor) Exhaust Gas Recirculation...Cat Converter...Oxygen Sensor and Evaporation fault..Without knowing the codes ther is little I can do...So either take the vehicle to an auto parts store and have them read the codes or tell me what type of scan tool you are using because your not using it correctly ...saailer....

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