DTC codes / P28xx · Transmission / P2837
P2837 indicates that the transmission control module (TCM) has detected an out-of-range or performance fault in the electrical circuit for shift fork B, which is used in dual-clutch or automated manual transmissions to engage a specific gear. The TCM monitors the fork's position sensor and actuator circuit and sets this code when the signal does not match the commanded position within the expected time or voltage window.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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