Repair Siemens FTC (722.7)

Problem with the Siemens 722.7 gearbox?

Common complaints:

• An “F” appears on the display
• The car goes into limp mode
• The gearbox no longer shifts
• The transmission randomly shifts to “N” or an illogical gear
• The car won't start

Known bugs:

• P1840 (2120) Valve Y3 / 7Y1 – PWM Solenoid Valve 1/4 
• P1841 (2121) Valve Y3 / 7Y2 – PWM Solenoid Valve 3 shift
• P1842 (2122) Valve Y3 / 7Y3 – PWM Solenoid Valve 2/5 / R shift
• P1850 (2204) Y3/7N1 – Transmission RPM Sensor
• P1858 (2227) Y3/7S1 – Starter Contact Block
• P1884 (2123) PWM shift valve pressure
• P1843 Valve Y3/7Y4 – PWM Solenoid Valve Torque Converter Lock-Up Clutch
• P1844 PWM shift valve circuit

Find your part and report it for repair.