Circuit/System Verification

WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Verify that DTC U0293 is not set.
- If the DTC is set, refer to DTC U0100-U02FF (without HP6) , DTC U0100-U02FF (with HP6) .
Verify that DTC U0074, U1814, B1428, B1370, B1380, B1440, B1441, B1325, or P0562 is not set.
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Verify that DTCs U1817, U1818, U1844, and U1847 are not set.
- If the DTC is set, refer to DTC U0074 (Mid Speed or Chassis Expansion Bus) , DTC U0074 (Powertrain Expansion Bus) .