Multiple S70 check engine error codes after collision

Discussion in 'Volvo S70' started by Armchair observer, Apr 12, 2004.

  1. My S70 was in a collision of moderate severity recently. The front was
    crumpled slightly, but there was no evident engine damage. After the
    accident, the check engine light came on, and the following diagnostic
    codes were read:

    541 Evap. valve
    616 Cannister valve
    447 Control valve Air Pump
    212 Front O2 sensor signal
    521 Front 02 heating
    153 Rear O2 signal
    522 Rear O2 heating
    223 A/C pressure sensor signal

    The engine appears to run normally, but the A/C is not working.
    How could a collision cause all of these components to fail? Could it
    be that the wiring is damaged? How should the repair process proceed?
    Armchair observer, Apr 12, 2004
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  2. Armchair observer

    John Horner Guest

    541 Evap. valve

    Wiring or connector damage perhaps? This is not something to diagnose by

    John Horner, Apr 12, 2004
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  3. Armchair observer

    Mike F Guest

    I would imagine that there's a damaged or unconnected common ground
    somewhere near the right headlight. But of course it could be somewhere
    else, or the harness itself is damaged.

    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Apr 12, 2004
  4. Armchair observer

    G Klein Guest

    Best bet return to the body shop that repaired & have them figure out what
    G Klein, Apr 12, 2004
  5. Just had the same happen. Body shop had no idea. Take it to someone that
    knows Volvos.

    Hamish Alker-Jones, Apr 13, 2004
  6. Thanks for the reply. There appears to be an empty rectangular socket
    next to the passenger-side headlight. Is this where a ground connector
    should have been plugged in? What does the ground connection look
    Armchair observer, Apr 13, 2004
  7. Thanks to a competent local garage, this problem was correctly
    diagnosed. It turned out to be caused by a blown fuse and a loose A/C
    pressure sensor. The local Volvo dealer (Big Dee, in White Plains, NY)
    was unable to make this diagnosis and proposed changing out all the
    items indicated by the error codes, at a cost of over $1,000. I am
    very disappointed in Volvo's local dealer mechanics and I will not be
    returning there for maintenance.
    Armchair observer, Apr 13, 2004
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