P285C

Shift Fork A Actuator Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Difficulty shifting gears
Spontaneous gear shifting
Switching to emergency mode of the gearbox
Check Engine Light Illuminates
Loss of engine power

Causes

Shift solenoid valve malfunction
Problems with wiring or connectors
Mechanical damage to the shift fork
Low or contaminated transmission fluid
Transmission control module (TCM) malfunction

How to Fix

Checking the level and condition of the transmission fluid
Diagnosis of shift solenoid valves
Checking the integrity of wiring and connectors
Diagnostics of the transmission control unit
Mechanical inspection of the shift fork and associated parts

Related codes

P285D P285E P285F