Code Definition

P1905 — Pressure Control Solenoid C Intermittent Short

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

About P1905

P1905 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1905 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

P1905 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

The P1905 fault code indicates that the Transmission Control Module (TCM) has detected an intermittent short circuit in the circuit controlling Pressure Control Solenoid C. This solenoid regulates hydraulic pressure to facilitate proper gear shifting. The fault is triggered when the TCM identifies sporadic short-to-power or short-to-ground conditions, leading to inconsistent solenoid operation.

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