TM  1-1520-240-10            2-3-13 Table  2-3-1. T55-GA-714A DECU BIT Fault Code List/Matrix (Continued) DECU Fault Code(s) Fault Operational Effect Pilot Action Mission Impact B6 DECU ECL soft fault. N/A N/A Abort Mission B7 DECU PLA hard/soft fault. With or without REV light Unable to start in Primary or Reversionary N/A Abort Mission B9 DECU cold junction com- pensation (CJCV) soft fault. N/A Make an entry on the DA Form 2408-13-1 even if fault code clears. Continue Mission BA DECU internal soft fault. N/A N/A Continue Mission BB DECU internal soft fault. N/A N/A Continue Mission BC DECU 400 Hz hard/soft fault. With or without REV light N/A Abort Mission C1 DECU communication soft fault. N/A N/A Continue Mission C2 DECU communication soft fault. N/A N/A Continue Mission C3 DECU communication soft fault. N/A N/A Continue Mission C4 DECU communication soft fault. Unable to TQ share Switch to PTIT sharing Continue Mission C5 DECU communication soft fault. N/A N/A Continue Mission C6 DECU communication soft fault. N/A N/A Continue Mission C7 DECU communication soft fault. N/A N/A Continue Mission More than two codes, C1 through C7 DECU communication link redundancy failure. N/A N/A Abort Mission C8 DECU communication link failure. N/A N/A Abort Mission C9 DECU N1 from the other engine fails. Unable to N1 load share N/A Continue Mission CF DECU load share hard fault. FADEC light Primary mode failed N/A Abort Mission D0 DECU overspeed system soft fault. Overspeed system compro- mised N/A Continue Mission D1 DECU P3 sensor soft fault. Loss of surge protection N/A Abort Mission D2 DECU P1 sensor hard fault. With FADEC light N/A Abort Mission D2 DECU P1 sensor soft fault. Without FADEC light N/A Continue Mission D3 DECU internal soft fault. N/A N/A Continue Mission