As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO LAS DUE TO A CABIN PRESSURE PROBLEM OUT OF LAX. WHEN TROUBLE SHOOTING INTERFACING SYSTEM ON E11 "LANDING GEAR LOGIC SHELF", M1110 "NOSE GEAR GROUND SENSING PROXIMITY SWITCH" FAILED. IN ADDITION, MAIN LANDING GEAR GROUND SAFETY SENSOR FOUND OUT OF LIMITS. REPLACED M1110 AND ADJUSTED MAIN LANDING GEAR GROUND SAFETY SENSORS. SYSTEM OPERATIONAL CHECKED GOOD.