Code Definition

P1765 — Automatic Transmission pressure control shift solenoid

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Toyota

About P1765

P1765 is a manufacturer-specific powertrain diagnostic trouble code recorded for Toyota vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1765 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This Toyota transmission uses several pressure control solenoids, often linear or pulse width modulated, that the Transmission Control Module commands to regulate hydraulic apply pressure for the clutches and bands, and DTC P1765 relates to a specific one of these pressure control shift solenoids, commonly associated with direct clutch or similar apply control. The module commands a current to the solenoid and monitors the circuit voltage and current draw, and judges performance by whether the pressure and shift response match the command. The code sets when the module detects an electrical fa...

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