Transmission

P0750 — Shift Solenoid A Circuit Malfunction

Severity: medium Drive with care, to a shop

What P0750 means

The transmission control module (TCM) constantly monitors the shift solenoid A circuit. This solenoid directs fluid pressure inside the valve body to engage the correct gears. P0750 sets when the circuit's electrical values or the solenoid's response don't match what the TCM expects.

Symptoms

  • Check Engine light or transmission warning on
  • Harsh or delayed shifts
  • Slipping or getting stuck in one gear
  • Limp mode with limited speed and gear selection
  • Worse fuel economy

Possible causes

  1. Failed shift solenoid A
  2. Damaged wiring or corroded, loose connectors
  3. Low or contaminated transmission fluid (ATF)
  4. Dirty or sticking valve body
  5. Internal transmission problems
  6. TCM fault (uncommon)

How to diagnose

  1. Scan all codes and freeze-frame data, and look for other transmission or CAN network codes
  2. Check ATF level and condition: color, smell, debris or burnt material
  3. Inspect the transmission harness and connector for chafing, fluid intrusion and corrosion
  4. Test the solenoid circuit for opens, shorts to ground and shorts to power
  5. Measure solenoid resistance and compare it to the factory spec
  6. Verify power and ground supply to the TCM
  7. Drop the pan, inspect the filter and valve body, and bench-test the solenoid if needed
  8. Look up technical service bulletins and software updates for your vehicle

Common fixes

  • Replace shift solenoid A
  • Repair the wiring or replace the connector
  • Change the ATF and filter
  • Clean or replace the valve body
  • Reprogram or replace the TCM once confirmed faulty
  • Rebuild the transmission if internal wear is found

P0750 on different brands

Ford · manuals
On 2024-2025 Ford gasoline engines you may see the extended format P0750:11, meaning a short to ground in the circuit; it describes the condition the monitor detected, not a confirmed failed part.

Questions and answers

Can I drive with a P0750 code?

Only briefly and carefully, for example to a repair shop. The transmission may enter limp mode, and ongoing slipping can cause expensive damage.

What most often causes P0750?

The most common causes are a failed solenoid, bad wiring or connectors, and low or dirty fluid. Start by checking the ATF level and inspecting the harness.

Will a fluid change clear P0750?

It might if low or contaminated fluid was the cause. Clear the code and see whether it returns; if it does, look at the electrical circuit or the valve body.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.