P2840

Shift Fork D Position Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

The car goes into emergency gearbox mode
Difficulty shifting gears
Check Engine Light Is On
Loss of engine power
Transmission gets stuck at one speed

Causes

Open or short circuit in wiring harness
Poor contact in the sensor connector
Fork position sensor malfunction
Damage to the gear shift fork
Problems with the transmission control unit

How to Fix

Check the integrity of the wiring harness to the sensor
Clean sensor connector contacts
Check the resistance of the position sensor
Replace the fork position sensor if necessary
Check the mechanical condition of the shift fork

Related codes

P2841 P2842 P2843