125000485 - C23 THE GEARBOX IS STUCK

Following a gear change in manual or automatic, the gearbox goes into 5th gear (even with the vehicle stopped)
Results of the tests
0CHECK THE CLUTCH DISC SPEED SENSORAll OKProblems metOperation
Check the clutch disc speed signal following See Test    See Test 2127A HYDRAULIC TRANSMISSION EXTERNAL LINKAGEContinue to Step 2There are problems with the sensor signalContinue to Step 1
1CHECK THE STATE OF THE CONNECTIONSAll OKProblems metOperation
Check the state of connections and wiring of the speed sensor.
Remember that this sensor is on the gearbox bellhousing near the reversing lights sensor
In some cases, when the sensor is dismantled, there may be iron filings deposited on the sensor head
Continue to Step 2There are faults detectedRepair/replace the part that is not working
2CHECK THAT THE FAULT IS NO LONGER PRESENTAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContact Technical Service for further information on the problem