Please only just send in the Control unit not the whole valve body !  

Common Failure symptoms:

• No reverse gear
• No gears above 1^st
• Gears sticking
• No gears at all
• Limp home mode
• Harsh gear change
• Jerking / behaving erratically

Common fault codes:

• P0726 – RPM Signal Of Engine Control Unit (Implausible Signal)
• P173C – Valve 1 In Sub-gearbox 1 (Electrical Fault)
• P173F – Valve 2 In Sub-gearbox 1 (Electrical Fault)
• P1740 – Clutch Temperature Monitoring
• P174A – Valve 3 In Sub-gearbox 1 (Electrical Fault)
• P174B – Valve 4 In Sub-gearbox 1 (Electrical Fault)
• P174C – Valve 1 In Sub-gearbox 2 (Electrical Fault)
• P174C – Valve 2 In Sub-gearbox 2 (Electrical Fault)
• P174E – Valve 3 In Sub-gearbox 2 (Electrical Fault)
• P174F – Valve 4 In Sub-gearbox 2 (Electrical Fault)
• P176A – Gear Actuator/Selector 1 (Not Adjustable)
• P176A – Selector 1 Cannot Be Regulated
• P176B – Selector 2 Cannot Be Regulated
• P176B – Gear Actuator/Selector 2 (Not Adjustable)
• P179C – Main Pressure Valve (Electrical Fault)
• P179D – Cooling Oil Valve (Electrical Fault)
• P17D4 – Valve 2 in Sub-gearbox 1 (Mechanical Malfunction)
• P17D4 – Valve 3 In Sub-gearbox 1 (Mechanical Malfunction)
• P17D5 – Valve 3 in Sub-gearbox 2 (Mechanical Malfunction)
• P17D6 – Clutch 1 Pressure Too High
• P17D7 – Clutch 2 Pressure Too High
• P17D8 – Torque Limitation Due To Clutch Temperature
• P17E0 – Gear Actuator 1 Mechanical Error
• P17E0 – Gear Actuator/Selector 1 (Mechanical Error)