Code Definition

P0964 — Pressure Control Solenoid B Control Circuit Open

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0964

P0964 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0964 is stored, the module has detected an open (broken or disconnected) electrical path 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.

Because P0964 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0964 fault code is set when the control module detects an open circuit condition in the control circuit of Pressure Control Solenoid B. This solenoid is crucial in the operation of an automatic transmission, where it controls hydraulic pressure for specific gear shifts and torque converter clutch operations. An open circuit condition implies a complete disruption in the electrical path, preventing electrical current from reaching Pressure Control Solenoid B. Such a disruption can be due to severed wiring, disconnected connectors, or a fault within the solenoid itself. The lack of electric...

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