Diagnostic Aids
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- If the DTC B2559 is a history DTC, the fault may be intermittent. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS .
- The following conditions may cause an intermittent malfunction to occur:
- An intermittent open in the theater dimming ground circuit.
- The BCM is intermittently opened.