Code Definition

P1902 — Pressure Control Solenoid B Intermittent Short

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

About P1902

P1902 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 P1902 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.

P1902 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 P1902 fault code indicates that the Transmission Control Module (TCM) has detected an intermittent short circuit in the circuit controlling Pressure Control Solenoid B. This solenoid regulates hydraulic pressure within the transmission to ensure smooth shifting and proper operation. The fault is triggered when the TCM detects an unstable electrical condition, such as a short to power or ground, that occurs intermittently.

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