Conditions for Setting the DTC

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

P0815

Condition 1

Up and Down Shift Switch = Upshift & Transmission Range = Park or Neutral or Reverse - For greater than 1 s

Condition 2

Up and Down Shift Switch = Upshift & Transmission Range = Forward Gear - For greater than 2 min

P0816

Condition 1

Up and Down Shift Switch = Downshift & Transmission Range = Park or Neutral or Reverse - For greater than 1 s

Condition 2

Up and Down Shift Switch = Downshift & Transmission Range = Forward Gear - For greater than 2 min

P0826, P1876

Up and Down Shift Switch = Invalid - For greater than 1 min