OBD-II code family
Pressure Control Solenoid A Faults (5 codes)
5 related fault descriptions. Use each full code and the exact vehicle service information to identify its circuit, monitored condition, and required tests.
Codes in this family
This is the complete published member list for this guide. Each code retains its own page; shared diagnostic context does not mean that every member has the same test or repair.
What these codes mean
P0745 names pressure-control solenoid A generally; P0746 adds performance or stuck off, P0747 stuck on, P0748 electrical and P0749 intermittent. Keep the exact reported condition when selecting a procedure. These labels do not prove a failed solenoid or establish that all five monitors operate in the same way.
The A designation does not universally mean main line pressure. The archived 2012 Altima V6 VQ35DE/RE0F09B P0745 procedure concerns a line-pressure solenoid regulating pump discharge in response to the TCM. Its detection information includes voltage/circuit and target-versus-monitor checks. The unsuffixed title is not a universal instruction to begin with hydraulics or treat the wiring as healthy.
Ford’s covered 2024–2025 summary gives a different bounded example. Its TR9070 DCT table associates P0746 and P0747 with the odd-clutch pressure-control valve, separately from the line-pressure pilot and relief valves. A pressure-control A description therefore does not establish that every shift must be affected or that a single-range complaint rules the code out.
Performance, stuck off and stuck on describe monitor results. They do not independently identify the actual current, mechanical valve position or high/low pressure direction. A result outside its target can require validation of the commanded state, relevant feedback and application-specific circuit or hydraulic checks. A passing coil measurement does not clear every connection, and a gauge is useful only with the correct circuit, equipment, operating conditions and specification.
Hyundai’s August 2023 bulletin 23-AT-003H-1 addresses the complete P074800 code on its listed eight-speed applications. It identifies the pressure-control solenoid separately from shift and torque-converter solenoids, includes preliminary data/wiring checks and specifies conditional service and follow-up. That sequence does not rank failure frequency, establish universal serviceability or justify a controller or assembly replacement on another transmission.
An intermittent result is not a requirement to make every test hot, move a live harness or drive until a fault appears. Temperature, vibration and recent work are useful recorded circumstances, not proof of a winding break, contaminated connector or harmless temporary condition. Preserve the full scan, status, available event information and actual warnings before clearing memory.
Have qualified personnel follow the correct diagnostic order and required isolation. Avoid improvised direct power, pressure tests, forced engagement, hot connector work and road reproduction. Do not order fluid service or reset adaptations as a generic cure. Repair the demonstrated cause and perform only the setup and verification that the actual repair requires.
Stop safely and arrange assessment or recovery for serious slipping, binding, unexpected engagement, propulsion loss or an applicable stop warning. A remaining gear, restart or normal trip is not driving-safety or repair proof. An itemized estimate should name the confirmed circuit, valve, harness or assembly, actual access, fluid and any required setup; the generic code alone cannot price the job.
Identify the circuit on your vehicle
Match the full DTC, reporting module, and any failure-type suffix to the service information for your exact year, make, model, engine, and equipment. An identifier alone does not establish installed hardware count, location, connector pinout, or a universal measurement.
Where the manufacturer publishes its own meaning for this code, that is the one to work from — it describes the actual component on your vehicle, which the generic definition cannot. Keep the generic description for what it is good for: it tells you which subject area the standard assigned the code to, which is useful context when the two appear to disagree. If they do disagree, follow the manufacturer.