Possible reasons for the automatic transmission jerking at low speeds:
Transmission fluid slippage:
*Low fluid level
* Contaminated or old fluid
* Worn or damaged clutches
Torque converter damage:
* Wear of sliding couplings
* Clogged filter
Problems with sensors:
* Faulty input shaft speed sensor
* Faulty fluid temperature sensor
*Faulty throttle position sensor
Damage to the electronic control unit (ECU):
* Malfunctions in electrical wiring
* Software problems
Other possible reasons:
* Worn spark plugs or ignition coils
* Clogged fuel filter
* Dirty injectors
* Faulty mass air flow sensor
Diagnostics:
* Check the level and condition of the transmission fluid.
* Scan the trouble code using a diagnostic scanner.
* Conduct a transmission slip test.
* Check the operation of the torque converter.
* Check sensors and ECU.
Repair:
* Replace transmission fluid and filter.
* Repair or replace the torque converter.
* Replace faulty sensors.
* Repair or replace the ECU.
* Fix any other problems found.