Diagnostic Aids
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Malibu, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
DTC P1380 set indicates that the Anti-Lock Brake System (ABS) system has detected a malfunction which will not allow the EBCM/EBTCM to transmit correct rough road data to the PCM. Refer to DIAGNOSTIC SYSTEM CHECK - ABS in appropriate ANTI-LOCK BRAKES article.