Honda prelude 4th Gen flash codes?

My Honda Prelude (4th gen) has an ABS lamp on. We bridged the diagnostic 2 pin plug and got a code 4 8 which is a fault with the LR speed sensor, checked the sensor and found it to cracked, replaced the sensor; ABS lamp still on. Again checked for codes, now getting 4 2 (LF sensor). When will this end? Does the system just flash one code at a time? At �125 a go this getting very expensive? Is there no way to flash up ALL of the codes stored in the system?