What does code P284A mean?

Q: What does code P284A mean?

Shift Fork B Stuck. P284A indicates that the transmission control module has detected a stuck condition for shift fork B, which is the fork that moves the sleeve to engage or disengage a specific gear pair in a dual-clutch or automated manual transmission. The computer monitors fork position and travel speed, and it sets this code when the fork does not move as commanded or fails to reach the expected position within a calibrated time.

DTC codes / P28xx · Transmission / P284A

P284AShift Fork B Stuck

P284A indicates that the transmission control module has detected a stuck condition for shift fork B, which is the fork that moves the sleeve to engage or disengage a specific gear pair in a dual-clutch or automated manual transmission. The computer monitors fork position and travel speed, and it sets this code when the fork does not move as commanded or fails to reach the expected position within a calibrated time.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

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.