P1831
Symptom: CHECK GEARBOX indicator lamp on. The system's emergency operation program has been activated.
P1831 |
Fault symptom
CHECK GEARBOX indicator lamp on. The system's emergency operation program has been activated.Condition
Transmission input shaft speed on downshifting is higher than 225 km/h to 3rd gear 132 km/h to 2nd gear 76 km/h to 1st gear.Diagnostic help
The fault is probably a mechanical malfunction and can scarcely be due to a fault in the control system. Wear in the transmission should be investigated.Diagnostic procedure
1 Check the fault symptoms
Check the problem by driving the car as shown in the road test schedule, see . Note any fault symptoms.
Does the fault symptom persist?
yes |
Proceed to
and then continue with point 2.
no |
Continue with point 2.
2 Final check
Clear the diagnostic trouble code. Drive the car on test at varying engine loads and speeds so that upshifts and downshifts through all the gears, with and without kick-down, are performed. Obtain readouts of any diagnostic trouble codes that are generated.
Does the diagnostic trouble code recur?
yes |
no |
The remedial action taken was correct.