Check Engine Light

Discussion in 'General Motoring' started by Dennis Grove, Jul 23, 2005.

  1. Dennis Grove

    Dennis Grove Guest

    I have an 01 Sonata 4 cylinder. Recently the engine light has come on.
    Checking with an OBDII tester showed an error of "engine coolant temp
    circuit malfunction". I cleared the error and drove the vehicle the
    following two days before it reappeared. Any ideas? Thanks in advance.
     
    Dennis Grove, Jul 23, 2005
    #1
  2. Dennis Grove

    hyundaitech Guest

    You'll be interested in the Freeze Frame data when the code stored. The
    OBD-II tester you used may be able to give this to you. A very high
    temperature suggests the vehicle was overheating for some reason. A very
    low temperature (-40 degrees is common) suggests a coolant temp sensor
    problem or an open circuit in the sensor wiring (almost always the
    sensor). If the temperature is not at operating temp but not ridiculously
    cold, then you may be looking at an issue with the thermostat stuck open.

    Do you have the actual code? That may help narrow things a bit.
     
    hyundaitech, Jul 23, 2005
    #2
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