As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INOP FORWARD TANK LIGHT ON REAR FLT ATTEND PANEL. REPLACED ALTITUDE PRESSURE SWITCH (SEQ 9312011) LOGIC CONTROL MODULE AND CHECK VALVE (SEQ 9312012) AIRCRAFT RETURNED TO GATE. BITE CHECK OF NEW LOGIC CONTROL MODULE SHOWED LOGIC CONTROL MODULE IS BAD. REPLACED LOGIC CONTROL MODULE, OPS CHECKS OKAY.