Diagnostic Fault Information

The following fault table will help determine if a hydraulic circuit or an incorrect position of a valve train component affects the transmission operation.

Component	Cause	DTCs
1-2-3-4 and 3-5-R Clutch Housing Assembly	1-2-3-4 clutch backing plate retaining ring not seated, causing the piston to over-travel and cut 1-2-3-4 clutch piston seal	P0776 P0777
4-5-6 Clutch Housing	4-5-6 Housing broken hub weld	P0776
Control Solenoid (w/body and TCM) Valve Assembly	Clutch pressure control solenoid 2: Always exhausting (Stuck On) Not exhausting (Stuck Off) Needle piston or armature pin binding Control signal fluid supply leak - valve body filter plate assembly cracked or damaged gasket seal O-ring seals leaking Valve body filter plate assembly cracked, blocked or damaged gasket seal	P0776 P0777
Fluid Pump Cover Assembly	Fluid Pump Cover Vanes and Fluid Pump Rotor broken - wrong pump rotor installed	P0776
Fluid Pump Cover Assembly	Isolator valve sticking or stuck - debris, sediment, binding or scored bore	P0776 P0777
Upper Control Valve Body	3-5-R regulator valve stuck - debris, sediment, binding or scored bore.	P0776
Upper Control Valve Body	Actuator feed limit circuit supply fluid to solenoid restricted or not available (debris or sediment blockage) B-R-1 and 4-5-6 clutch regulator valve not in the applied position - debris, sediment, binding or scored 4-5-6 clutch boost valve not exhausting - binding or scored bore	P0776 P0777
Upper Control Valve Body	The B-2-6 regulator valve stuck - debris, sediment, binding or scored bore	P0777

Gear	1-2-3-4 CL PC SOL 5	2-6 CL PC SOL 4	3-5 REV CL PC SOL 2	LOW REV 4-5-6 CL PC SOL 3
Park	OFF	OFF	OFF	ON
Reverse	OFF	OFF	ON	ON
Neutral	OFF	OFF	OFF	ON
1st Braking	ON	OFF	OFF	ON
1st	ON	OFF	OFF	OFF
2nd	ON	ON	OFF	OFF
3rd	ON	OFF	ON	OFF
4th	ON	OFF	OFF	ON
5th	OFF	OFF	ON	ON
6th	OFF	ON	OFF	ON