How to fix P0748 Code: Pressure Control Solenoid “A” Electrical
A P0748 code is set when the computer (TCM/ECM/PCM) detects an issue with the Pressure Control Solenoid “A” located in the transmission.
The pressure control solenoid regulates hydraulic pressure in response to throttle angle, engine speed, and prevailing load requirements.
Fixing a transmission can be difficult since there are often many small components.
Possible Causes of a P0748 Code:
Low/Dirty Transmission Fluid
Bad Pressure Control Solenoid “A” or Wiring Issue
Transmission Issues (Pump - Valve Body - Blocked Passage)
Bad Computer (TCM/PCM)
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