ignition module transistor

  • 300zxanderson
    300zxanderson
    Junior Member
    • 20
    #1

    ignition module transistor

    Error code 21 is popping up. I think i need to replace this component. Does anyone have a spare one of these. The only one I can find is over $100. If you think the error code 21 is something else please let me know.
  • zachary.ard
    zachary.ard
    Benevolent Dictator
    • 1629
    #2
    Well - code 21 could be a couple of things.

    If you think its the PTU (Power Transistor Unit) here is a how-to to use a newer, upgraded PRW-2 unit.
    https://z31performance.com/forum/z31…ransistor-unit

    If you think the issue is a faulty Crank Angle Sensor, they are available here -
    http://store.acadianasportscars.com/en056-0002
    Chicks dig me, rust fears me.