As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING MSG CLIMBING THROUGH FL 210. FOUND CODE A02 FAIL ON PSEU ON LEG NR 1. PERFORMED OPERATIONS CHECK AFTER REMOVAL & REPLACEMENT OF PSEU IAW AMM 32-61-01. OPERATIONS CHECKED GOOD. PSEU PANEL RELIGHT LIGHT FAILED. A02 CODE IS FOR FAULT ON SUBSYSTEM C CIRCUIT CARD ASSEMBLY. OTHER CODES FLAGGED 3 GEAR UP LOCK & DOWN LOCK SENSORS.