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Thread: "Attached PCM's serial number is missing"

  1. #1
    Join Date
    Jun 2005

    Unhappy "Attached PCM's serial number is missing"

    Went to start up my car and it would die with any throttle.

    It was throwing MAF codes but haven't run a MAF in a year CLSD.

    I attempted to upload the existing tune with no success. Serial number blank not detected. Screen prompted me to "Please perform a full reflash of this PCM."

    Pulled PCM and discovered corrosion in the left blue connection. The other blue and both reds looked fine.

    Is my PCM bad?

    I wasn't tuning and hadn't logged or flashed in a week at the time of the incident.

    Thanks for any help!
    Christopher's -10cc Alum 6.6L '01 T/A FIREHAWK Recaro Topline Leather/Suede Seats

    Ported L92 Heads, Custom Cam, L76, F.A.S.T. 90TB, 104Lid, CLSD, Kooks 1 7/8 stepped 2", 3" True Dual X-pipe over-the-axle, 3.90 gears, Tubular K, Upper/Lower tubular A-arms, full UMI suspension, etc.

    Brenda and Her Custom Red/Black '01 WS6 Performabuilt stalled A4, Custom Cam, Kooks 1 7/8", 3:42, lid/K&N, Loudmouth, Full Custom Interior, Playboy Package.

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003


    Can you get the corrosion cleaned up (you will have to open the PCM case and see if the pins have continuity to the inside)...?

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