What was found
AFTER TAKE OFF, RAISED LANDING GEAR HANDLE, RECEIVED ECAM SYS 2 LANDING GEAR FAULT. FOLLOWED ECAM, SWITCHED TO SYS 2. ACCELERATED AND RECEIVED LANDING GEAR OVER SPEED WARNING. FOUND P11 CODE DISPLAYED ON PROXIMITY DETECTOR UNIT. R & R PSEU IN REF TO MM 32-31-71-0401. SYS OPS CHECKED GOOD. OK FOR CONTINUED SERVICE.