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Vectra DTI Engine Management Light (P0400)

Discussion in 'Cavalier, Calibra, Vectra, Signum, Sintra & Insignia owners forum' started by gss, Jan 26, 2005.

  1. gss

    gss Member

    Messages:
    41
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    2
    Location:
    Birmingham
    I have a Vectra 2.0 DTI - 2001 registered. The dreaded ECU/Problem Light has come on. The light comes on once the car has warmed up, i.e. after 10 minutes driving. The light then stays on and the car dramitically looses power. When standing and revved, it will refuse to exceed 3,500 rpm whilst the light is on. Once the light goes out, its right as rain. Also, since the light has been coming on and the loss of power has been present, when revved, the exhaust is making a strange "whoooossssshing" noise. Ive had the car taken into 2 seperate Vauxhall Garages and had a Tech2 Diagnostic check done. The code displayed is P0400-Critical System Malfunction! The chap at the Vauxhall Garage said to me that its the air flow meter. Luckily for me, ive got another Vectra DTI, so I swapped them over, BUT the same problem persists. I had a similar problem on my 2nd Vectra DTI, on that one it turned out to be a really small vacuum pipe that had come off by the battery, but on this one, IM STUMPED. Can someone please shed a little light on this for me please as having read all the horror stories of Vauxhall Dealers, im very reluctant to take it in. PLEASE PLEASE CAN SOMEONE HELP ME. Thanks!
  2. Mark T

    Mark T Gas Powered

    Messages:
    15,295
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    12
    Location:
    Chelmsford, Essex.
    Drives:
    Astra G Estate, CDX + Elegance, Zafira Design 1.9CDTI
    http://www.cavweb-forums.co.uk/showthread.php?t=38618

    According to TIS (Vauxhalls Technical Information)
    0400 is EGR related.


    Actual exhaust gas recirculation quantity is too great
    Coolant temperature between 40 °C (104 °F) and 100 °C (212 °F)
    Intake air temperature between -5 °C (23 °F) and 45 °C (113 °F)
    Atmospheric pressure between 900 hPa ( 0.9 bar ) and 1100 hPa ( 1.1 bar )
    Above conditions must be fulfilled for at least 5 s .

    Actual exhaust gas recirculation quantity is too low
    Coolant temperature between 40 °C (104 °F) and 100 °C (212 °F)
    Intake air temperature between -5 °C (23 °F) and 45 °C (113 °F)
    Atmospheric pressure between 900 hPa ( 0.9 bar ) and 1100 hPa ( 1.1 bar )
    Above conditions must be fulfilled for at least 10 s .
  3. gss

    gss Member

    Messages:
    41
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    2
    Location:
    Birmingham
    Hi All.
    Just as an update to his situation and a thanks you to all those who tried to help, I have now got the problem sorted. I had a vac test done on the car and was told that the EGR Valve was not holding any vacuum, hence the EGR Valve was buggerd. Ive since had a new one fitted and (touch wood), its right as rain, even the guy at Vauxhall drove it and said it a totally different car! Thanks all for your responses.
    G.
    :ROFLMAO:
    ;)
  4. andrew butter

    andrew butter New Member

    Messages:
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    Location:
    stockport
    egr valve

    i have a 2 litre vectra diesel r reg it just wont rev very high on the move it is very slow barely drivable. the engine management light does not come on when the ignition is turned on and it has not come on whilst driving. how can u check the egr valves are working on the car. any help please i am running out of ideas here thanks andy
  5. gss

    gss Member

    Messages:
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    Location:
    Birmingham
    Hi Andrew.
    Firstly, as far as im aware, the engine management light should come on when the ignition is on and should stay on for a little while and then turn off. If this doesnt happen, then it could be the bulb is blown or there is no bulb in there.
    As for your problem, start with the small vacuum pipes on the vac boxes. The boxes are located on the right hand side of the battery and are 2 small black plastic cannister tyep thingy's with 2 small pipes coming off each one. The rubber unions that usually connect these pipes to the canister usually split. If this doesn not solve anything, the you need to ask someone at Vauxhall to do a vacuum test on teh EGR Vavle. Basically, thiis is done by removing the vacuum pipe off the EGR valve and plugging in the pipe that come off the vacuum pump. When pumped, the reading on the meter should go up and stay up and keep doing it as you put more pressure into it. If the air loads and then releases as soon as you release the vac tester, the EGR valve is well and truly gone. BUT before you proceed, get a Tech2 Diagnostic check done, it could well be something else!?!??!
    Hope this helps. Keep mo posted.

    Thanks
    G
  6. baggie bird

    baggie bird New Member

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    Location:
    Birmingham UK
    Hi G,

    I have exactly the same problem at the moment with my 1998 Vectra Di. Just wondering whether this problem was expensive to get fixed?
  7. jasmine

    jasmine New Member

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    Location:
    midlands
    @gss

    Hi please could u let us know where and how much it cost u plz many thanks.
  8. khanm47

    khanm47 Guest

    Hi, i have a R reg Vectra 2.0TDI, my engine management light comes on whenever i'm on the motorway go over 80mph or when i rev the car to 4000 revs. It stays on for 20mins approx. and then switches off for a bit and back on again when i pick up the speed. The car resorts to basic power when the EML switches on. It does not switch on when i'm driving in the streets. Am i right in thinking it most likely needs a vac test??????? Or replacement sensor??????????

    PS- A friend of mine has got the same problem and he was told by a mechanic it would cost him £80 to repair. Does that sound right???

    Any suggestion pls????
  9. cheekylad

    cheekylad New Member

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    Location:
    birmingham england
    fookin vectra aint half as good as my previous car (lexus is200). how i regret the day i sold it to lose my flash status!!!
    anyway, mine is a 2.0 di ls with a turbo but vauxhall dont call it the dti cos it is the 1999 model and the newer "dti" had fuel return mods done to it. my EM light wont come on so it wont start but it did suffer with what i thought was a flatspot on acceleration and it also has a strange whooshing noise when cold but the EM light never came on during driving, only at start up. does anyone have any ideas before i knock the poop out of this pile of poop.
  10. khanm47

    khanm47 Guest

    Hi,

    Its me again! After thorough investigation and fault diagnosis i have managed to work out exactly what is wrong with my shitpile (vectra).

    The mass air flow meter seems to be the problem as i have also bought a newer vectra (DTI) which is fine, and i exchanged the airflow meters to determine the problem. When i placed the air flow meter from my new vectra into the old one, the old vectra drove like a dream!!!!!!!

    100% performance improvement!!!!!!!!!!!!

    I then decided to purchase a new air flow meter and hoped it would cure the problem. As i was searching for prices and spares i came across a website (www.pheonixspares.com) who specialise in vauxhall parts. I spoke to a man who, out of the kindness of his heart, informed me that the problem was deeper than the air flow meter. He seemed the kind of individual who has had a lot of experience in vauxhalls. I was told the INLET MANIFOLD VALVE

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