DTC codes / P28xx · Transmission / P2811
P2811 indicates that the transmission control module (TCM) has detected an intermittent electrical fault in the circuit for pressure control solenoid G, which is used to regulate hydraulic pressure inside the automatic transmission. The TCM monitors the solenoid's commanded current versus actual current or circuit continuity, and it sets this code when the signal drops out or becomes erratic for a brief period rather than failing completely.
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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