Torque converter clutch does not disengage; engine stalls easily

Probable cause(s)

• Shift solenoid valve B defective
• CVT lock-up clutch control solenoid valve defective
• Torque converter clutch piston defective
• Valve body assembly defective

Notes 

• Inspect shift solenoid valve B .
• Inspect the CVT lock-up clutch control solenoid valve .
• Inspect the torque converter assembly for wear and damage. If the torque converter assembly is worn or damaged, replace it as an assembly .
• Check the valve body assembly for wear and damage.