Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- The BCM no longer detects the fault in the ambient light sensor circuit.
- A history DTC B2648 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
- The BCM receives a clear code command from the scan tool.