P284E

Shift Fork B Unrequested Movement

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect gear shifting
Delays when shifting gears
Switching to emergency mode of the gearbox
Unusual noises from the transmission
Power Loss

Causes

Mechanical wear of the shift fork
Problems with hydraulics in the gearbox
Fork position sensor malfunction
Electrical wiring problems
Transmission control module (TCM) malfunction

How to Fix

Check the condition of the gear shift fork
Check the gearbox hydraulic system
Check fork position sensors
Check electrical wiring and connections
If necessary, replace the shift fork

Related codes

P284D P284F P2850