P1743

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK GEARBOX warning lamp is on. TCM in Limp-Home mode.

P1743

Fault symptoms

CHECK GEARBOX warning lamp is on.

TCM in Limp-Home mode.

Conditions

Engine speed above 4000 rpm.

No gearchanges made

Transmission in lock-up mode

Accelerator position <30%

Fault criteria

TCM registers rapid changes in output shaft speed when the transmission is in lock-up mode or registers that the input speed is more than 100 rpm lower than the engine speed.

Diagnostic help

This diagnostic trouble code primarily indicates a mechanical fault in the transmission.