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Thread: P0638

  1. #1
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    Default P0638

    car is a 54 reg 2.2 DTI,,error code P0638-5B ( throttle control positive deviation )

    This is the sensor on side of throttle body to which i believe controls the butter fly in side. I have cleaned inside of throttle body,EGR and boost sensor ( thought build up of gunge might be causing problem).unfortunately error code still their.....

    is it just a case of changing this sensor meaning its just an electrical fault or is it the inners on the throttle body to where sensor connects.

    any HELP appreciated......

  2. #2
    Regular Member Critch's Avatar
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    Vehicle : vauxhall vivaro

    Trim : Basic

    Engine : 1.9

    Year : 2004

    Default

    Is it not a throttle pedal fault?

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    not 100 % sure,but think its the sensor on side of throttle body itself,the one inline with the oil cap ( although not all DTI engines has the sensor there.)

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    anyone else had this error code , and what they did to cure this problem.

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