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P0745: Pressure Control Solenoid A Malfunction

Severity: medium

What it means: The engine or transmission computer has found a problem with pressure control solenoid A, an electric valve that sets the fluid pressure the transmission uses to apply its clutches and shift gears.

Safe to drive? Usually drivable short distances, but it can quickly get worse. If the transmission goes into limp mode or slips, drive gently to a shop or tow it.

Common symptoms

Likely causes, ranked

  1. Faulty pressure control solenoidShop
  2. Dirty, low or contaminated transmission fluid or a clogged filterShop
  3. Wiring or connector damage or corrosionShop
  4. Valve body or internal transmission faultShop
  5. Transmission computer (TCM/PCM) faultShop
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Vehicle-specific notes

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Answers that mention P0745

DIY or shop?

Checking fluid level and condition and looking at wiring can be DIY on some vehicles. Solenoid, valve body and internal repairs are shop work. Check for service bulletins first.

Vehicle notes

  • Toyota Tacoma 2024: Toyota's bulletin for 8-speed limp mode lists P0745 (with extra suffix letters, such as P074571) among the codes that qualify certain VINs for a transmission and torque converter replacement. See the related Tacoma answer.

Sources

Safety / mechanic note

Slipping or a sudden loss of gears in traffic is dangerous. Verify with a mechanic.

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Sources