Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. 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.
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.
Condition 2
The BCM detects a stuck ON Tap Down switch for 10 minutes in any forward gears.
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.