needing help with this code. Unit had a code F4 changed the VFC card and prom. Code F4 went away but now i have a code 23. i replaced Q 1 with the Q 1 kit. Still coding 23 Changed out the power card. same results removed heat sink and checked insulation paper under heat sink,ok no holes or tears. the battery is at 25.8 volts. Checked for shorts on traction motor , found no shorts on motor or cables. so now i'm at turn on key it goes thru self check and when self check is done it codes 23. serial number is ET-B--96-02732 any suggestions ?
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