Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
P0815 - Condition 1
The BCM detects a stuck ON Tap Up switch for 1 second in Park or Neutral.
P0815 - Condition 2
The BCM detects a stuck ON Tap Up switch for 10 minutes in any forward gear.
P0816 - Condition 1
The BCM detects a stuck ON Tap Down switch for 1 second in Park or Neutral.
P0816 - Condition 2
The BCM detects a stuck ON Tap Down switch for 10 minutes in any forward gear.
P0826
The BCM detects an invalid voltage on the TAP up/down signal circuit for 1 minute.
P1876
The BCM detects a TAP Enable Switch request 3 times when not in M (D6) range for 2 seconds.