General signs:
* Difficulty shifting gears
*Hard or drawn-out gear shifts
* Gear slippage
* Problems with enabling parking
* Flashing gear selector position indicator on the dashboard
* No response from the sensor
Specific features depending on the type of sensor:
Mechanical selector position sensor:
* Damaged or loose cable connecting the sensor to the gear selector
* Broken or deformed sensor arm
* Worn or damaged gear on the sensor
Electronic selector position sensor:
* Wiring problems (open, short circuit or damaged insulation)
* Faulty sensor
* Interference in the electromagnetic field affecting the operation of the sensor
*Transmission control module (TCM) problems
Other possible reasons:
* Faulty gear selector switch
* Problems with the gear shift mechanism
*Low or contaminated transmission fluid