Engine Management Light

  1. Frequent Poster Joined: Jul 2007 Posts: 810 2001 VTS
    #1
    Hi.

    EML came on. Had it read and it said 'No Codes', cleared the ECU anyway and light went out!?

    Wtf? Or could it have been a code that the OBD couldnt read?

    Cheers.
  2. Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can
    #2
    The generic readers will only pick up certain codes I'm afraid.

    As an example, my code reader currently states that there is a fault with my ECU's processor, that being just the one DTC. However, a proper code reader (££££) shows two other DTC's, one for the air injection pump and the other for second lambda sensor.
  3. Established Member Joined: Jul 2009 Aberdeen Posts: 2211
    #3
    mine goes on all the time when the car is redlined... lol
  4. Frequent Poster Joined: Jul 2007 Posts: 810 2001 VTS
    #4
    Quote:
    Originally Posted by Toad View Post
    The generic readers will only pick up certain codes I'm afraid.

    As an example, my code reader currently states that there is a fault with my ECU's processor, that being just the one DTC. However, a proper code reader (££££) shows two other DTC's, one for the air injection pump and the other for second lambda sensor.
    Ah right, interesting! So the air injection pump brings up a code? Removed mine and sure the cars never been the same since! Could be the problem. Now the codes are clear, I take it even Citroen couldn't find out what it was till the light comes on again?

    Cheers.
  5. Saxperience Post Whore Joined: Mar 2007 Reading Posts: 8980 French tin can
    #5
    I don't understand how you cleared the codes if there weren't any to clear...
  6. Frequent Poster Joined: Jul 2007 Posts: 810 2001 VTS
    #6
    Neither do I or the bloke at the garage haha.

    Think it was either a cock up with the ECU or a cock up with his machine :/ Either way the EML out, for now!