DTC 93: DTC 91 Or DTC 92 Set In Current Or Previous Ignition Cycle: Description
If DTC 91 and DTC 92 failed during last ignition cycle, DTC 93 becomes a current failure during next ignition cycle, keeping ABS disabled until a brake switch input is received. DTC 93 alone indicates DTC 91 or DTC 92 failed previously, but is intermittent or has been corrected.