What does code P2840 mean?

Q: What does code P2840 mean?

Shift Fork D Position Circuit. P2840 indicates that the transmission control module has detected an abnormal electrical condition on the circuit for shift fork D position, which is used in dual-clutch or automated manual transmissions to confirm the fork has engaged the correct gear. The computer monitors voltage or current on the signal circuit and sets this code when the reading falls outside the expected range for the commanded position.

DTC codes / P28xx · Transmission / P2840

P2840Shift Fork D Position Circuit

P2840 indicates that the transmission control module has detected an abnormal electrical condition on the circuit for shift fork D position, which is used in dual-clutch or automated manual transmissions to confirm the fork has engaged the correct gear. The computer monitors voltage or current on the signal circuit and sets this code when the reading falls outside the expected range for the commanded position.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.