P0722

Speed sensor, transmission output speed, control module input absent

Fault symptoms
CHECK GEARBOX warning lamp on.
TCM in Limp-Home mode.

Conditions
The signal from the output shaft speed sensor when:
^ Car speed is higher than 4 km/h.
^ Selector lever position sensor in position D, 3, 2 or 1.
^ Fluid temperature higher than 20°C.

Diagnostic help
A reading of the output shaft speed can be obtained with the diagnostic instrument.
Select "Output Shaft Speed"
Compare the diagnostic instrument reading with the speedometer when driving the car.

Check the wiring
Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short circuits in the various leads. Observe the multimeter, test lamp or diagnostic instrument while carrying out this check.