As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CREW PREFLIGHT, CREW SAID THE RT PORTABLE FIRE EXTINGUISHER BY LAV MOUNTED ON GROUND HAD A CROOKED PRESSURE GAUGE AND WAS WORRIED IT COULD RUPTURE IN FLIGHT OR ON USE. PORTABLE FIRE EXTINGUISHER R & R IAW AMM 26-26-02. ACFT RETURNED TO SERVICE.