Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The components are listed from the least to the most intrusive to service.

Component	DTC	Condition
Transmission Cooling System	P0796	Transmission Fluid Cooler - Flow Restricted/Leaking Transmission Fluid Cooler Hose or Transmission Fluid Cooler Inlet and Outlet Pipe - Flow Restricted/Leaking
Q8 Control Solenoid Valve Assembly	P0796, P0797	Q27C Pressure Control Solenoid Valve 3 - Binding or Sticking/Stuck Control Solenoid Valve Assembly Filter Plate - Blocked by debris/ Cracked O-Ring - Leaking
Control Valve Body	P0796, P0797	4-5-6 Clutch Regulator Valve - Binding or Sticking/Stuck
Automatic Transmission Fluid Filter	P0796	Oil Filter Assembly Pipe Seal - Leaking
Torque Converter with Fluid Pump Housing Assembly	P0796	Transmission Fluid Pump Housing - Scored/Worn
4-5-6 Clutch Housing Assembly	P0796	4-5-6 Clutch Piston Assembly - Damaged seal. - Leaking
Input Shaft Support	P0796	Input Shaft Seal - Leaking
Output Carrier Assembly	P0796	Pinion Pins - Incorrect installation
4-5-6 Reaction Carrier Hub Assembly	P0796	Reaction Carrier Hub - Broken Weld Torque Converter - Component or System Overtemperature
3-5-R and 4-5-6 Clutch Housing Assembly	P0796	4-5-6 Clutch Backing Plate Retaining Ring - Not seated correctly Not seated correctly