Code Definition

P0749 — Pressure Control Solenoid Intermittent

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

About P0749

P0749 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.

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 P0749 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 P0749 fault code is set when the Transmission Control Module (TCM) detects intermittent operation or signal fluctuations in the pressure control solenoid circuit. The pressure control solenoid is vital for regulating the hydraulic pressure in the transmission and is essential for proper gear shifting and transmission function. An intermittent fault in this solenoid's circuit indicates sporadic disruptions, possibly due to loose connections, wiring issues, or intermittent solenoid malfunctions. These intermittent issues can cause erratic transmission behaviour, such as unpredictable shiftin...

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