BUICK · 2024-02-02
This Preliminary information communicates concerns with dtc U1521 after replacing the headlamp
U1521 · Manufacturer communications
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
U1521 ← What does this code mean?3 Results
BUICK · 2023-04-17
This Preliminary information communicates concerns with dtc U1521 after replacing the headlamp
CADILLAC · 2012-10-30
This Preliminary Information communication provides information to the technician about vehicles that have "Low Beam Failure Message" displayed. Technician may find Diagnostic Trouble Codes B257C, B257D, U1501, U1502, U1511, U1512, U1521, U1522, U1531, and or U1532 set in the vehicle. Technician will need to reprogram the Body Control Module using Service Programming System.