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Home >> Cadillac >> 2019 >> XTS Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Automatic Transmission - 6T70 (M7U M7W), 6T75 (M7V), Or 6T80 (Mhm) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0815, P0816, or P0826 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2018 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.

P0815 - Condition 1 

TCM detects an upshift request for 1 s in Park or Neutral.

P0815 - Condition 2 

TCM detects an upshift request for 10 min in any forward range.

P0816 - Condition 1 

TCM detects a downshift request for 1 s in Park or Neutral.

P0816 - Condition 2 

TCM detects a downshift request for 10 min in any forward range.

P0826 

TCM detects an invalid voltage on the Tap up/Tap down signal circuit for 1 min.

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