DTC codes / P27xx · Transmission / P2775
P2775 indicates that the transmission control module (TCM) has detected an implausible signal or performance issue from the upshift switch circuit, which is part of the manual shift control system on automatic transmissions. The TCM expects a specific voltage pattern when the driver requests an upshift, and it sets this code when the circuit does not respond as designed.
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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