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Thread: P1625 Main Relay Circuit High/Low Voltage

  1. #1
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    Vehicle InfoStats

    Vehicle : Vextra

    Trim : SRI 2.0 TURBO

    Engine : 2.0 turbo

    Year : 2004

    Default P1625 Main Relay Circuit High/Low Voltage

    Vectra 2.0 turbo petrol

    Anyone know what the fault could be?



    P1625
    Main Relay Circuit High Voltage


    P1625
    Main Relay Circuit Low Voltage

  2. #2
    Regular Member Sindy's Avatar
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    Vehicle InfoStats

    Vehicle : Signum

    Trim : Mohican

    Engine : Z20NET

    Year : 2006

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    Done a search for you, this seems to pop up on the Z20NET...
    https://www.vectra-c.com/forum/showt...d-brake-lights

  3. #3
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    Vehicle : Vextra

    Trim : SRI 2.0 TURBO

    Engine : 2.0 turbo

    Year : 2004

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    Cheers for that, any further advice would help thanks.

  4. #4
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    Vehicle : Vectra SRi CDTi 150

    Trim : SRi

    Engine : 1.9 CDTi 150 Z19DTH

    Year : 2008

    Mileage : 80000

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    Quote Originally Posted by jaygsi View Post
    Cheers for that, any further advice would help thanks.
    Have you tried what the linked thread said Nicrok did?

  5. #5
    Regular Member justin32's Avatar
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    Vehicle : Vectra c SRI Facelift

    Trim : SRI

    Engine : 1.9 CDTI 150

    Year : 2006

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    I had this on my 1.9 (I know its a different engine) and had the same fault codes. After changing every fuse and relay in the car I had to admit defeat and had the ECU changed ( by little teapot) and its been perfect ever since. It turned out that my ECU had been taken apart and re mapped but not resealed and the water and cold got into it and slowly destroyed it.

    I spent years researching what it could be but never found a definite answer but the "main relay" fault codes did point towards the ECU when I found what little info I could find

  6. #6
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    Vehicle : Vextra

    Trim : SRI 2.0 TURBO

    Engine : 2.0 turbo

    Year : 2004

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    I'm not sure where the abs and ecu plugs in the engine bay are?

  7. #7
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    Vehicle : Vextra

    Trim : SRI 2.0 TURBO

    Engine : 2.0 turbo

    Year : 2004

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    bttt

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