Transmission

P0752 — Shift Solenoid A Stuck On

Severity: medium Drive with care, to a shop

What P0752 means

The transmission control unit shifts gears by using shift solenoids that open and close hydraulic passages in the valve body. P0752 sets when solenoid A stays on when commanded off, so the actual gear does not match the commanded one. The fault can be mechanical (a sticking valve) or electrical (a shorted circuit).

Symptoms

  • Check Engine light on
  • Transmission stuck in one gear or not shifting
  • Harsh or jerky shifts
  • Slipping during acceleration
  • Limp mode
  • Worse fuel economy

Possible causes

  1. Contaminated or sticking solenoid
  2. Debris in the valve body
  3. Failed shift solenoid
  4. Damaged wiring or connector
  5. Low or badly worn transmission fluid
  6. Faulty transmission control unit (rare)

How to diagnose

  1. Scan all codes and freeze frame data and note any other transmission codes
  2. Check transmission fluid level and condition: color, smell, metal particles
  3. Inspect the transmission harness and connector for damage, corrosion and fluid intrusion
  4. Measure solenoid A resistance and compare it with the spec for your vehicle
  5. Test the circuit for a short to ground or voltage
  6. Command the solenoid with a scan tool and watch the response
  7. Drop the pan and inspect the solenoid and valve body passages for debris

Common fixes

  • Change the transmission fluid and filter
  • Clean or replace solenoid A
  • Clean or replace the valve body
  • Repair the wiring or connector
  • Reflash or replace the control unit if confirmed faulty

Questions and answers

What does P0752 mean?

It means shift solenoid A in the automatic transmission is stuck on even though the computer is commanding it off. The transmission may pick the wrong gear as a result.

Can I drive with P0752?

Only briefly and carefully to a shop. Slipping and wrong gears wear the transmission quickly.

Will a fluid change fix P0752?

Sometimes, if dirt is making the solenoid stick. If the cause is electrical or a worn solenoid, you will need a new solenoid or a wiring repair.

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.