As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT AND AFTER TAKEOFF LEFT MAIN REMAINED EXTENDED UPON GEAR RETRACTION RAN ECAM AND PLACED GEAR HANDLE DOWN GEAR LOWERED NORMALLY DIVERTED TO PIT DUE TO 2-2 FUEL LACK OF WITH GEAR EXTENDED C/W VERIFIED LANDING GEAR EXTENTION AND RETRACTION TEST OF LEFT MLG IAW AMM 32-31-00/501.