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P0780

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK GEARBOX warning lamp on. TCM in limp-home mode.

P0780


Downshifting. Mechanical Fault.


Fault symptoms

CHECK GEARBOX warning lamp on.

TCM in limp-home mode.

Conditions

Input speed at downshifting shows a speed above:

225 km/h to 3rd gear.

132 km/h to 2nd gear.

76 km/h to 1st gear.

Diagnostic help

The malfunction primarily indicates mechanical defects and can hardly result from a malfunction in the management system. Transmission wear can result in rough shifting and a non-functional Lock Up.