Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- A current DTC B2648 clears when the BCM no longer detects the fault in the signal circuit or the low reference circuit of the DRL ambient light sensor.
- A history DTC B2648 clears after 100 consecutive ignition cycles.
- The BCM receives the Clear Code command from the scan tool.