Transmission · Powertrain · generic (SAE-defined)
P0752: Shift Solenoid "A" Stuck On
P0752 means the transmission computer has determined that shift solenoid A is acting as if it is stuck on, producing a gear that does not match what was commanded.
Standard title per SAE J2012 / ISO 15031-6 · Updated 2026-11-07 · By CarWhere Research
How P0752 sets
The powertrain or transmission control module (PCM/TCM) compares the gear ratio it sees from speed sensors with the gear it commanded. If the ratio matches a state where shift solenoid A remains applied even when commanded off, the module sets P0752. Some transmissions also use pressure switch feedback for this check. Gear assignments for solenoid A are manufacturer-specific.
Common causes of P0752
Roughly most likely first; the actual cause depends on the vehicle and needs testing to confirm.
- Shift solenoid A mechanically stuck in the applied position
- Debris in the solenoid or valve body
- Sticking shift valve
- Contaminated or degraded fluid
- Wiring shorted to power keeping the solenoid energized
- Internal hydraulic leaks
P0752 symptoms
- Check engine light on
- Transmission stuck in one gear
- Harsh or unexpected shifts
- Engine flare between shifts
- Limp mode or reduced power
How P0752 is diagnosed
- Check fluid level and condition.
- Scan for all transmission codes and freeze frame data.
- Confirm which gears solenoid A controls for this transmission.
- Check the control circuit for a short to power that would keep the solenoid energized.
- Road test with live data, comparing commanded and actual gear.
- Remove and inspect the solenoid and valve body for debris or sticking valves.
Typical fixes for P0752
- Replace shift solenoid A
- Clean or replace the valve body
- Repair a short in the solenoid circuit
- Service the fluid and filter
- Overhaul the transmission if internal damage is found
Replace parts only after testing confirms the cause — a code names the circuit or condition that failed a check, not necessarily the faulty part. We don’t publish per-repair prices; for what households actually spend on upkeep, see car repair costs.
Related codes & warning lights
P0752 FAQ
What does code P0752 mean?
P0752 means the transmission computer has determined that shift solenoid A is acting as if it is stuck on, producing a gear that does not match what was commanded. The standard definition is "Shift Solenoid "A" Stuck On."
Can I drive with a P0752 code?
Minimize driving. A solenoid stuck on can hold the transmission in the wrong gear, cause harsh downshifts, or trigger limp mode, all of which raise the risk of internal damage.
What does stuck on mean for a shift solenoid?
It means the solenoid is passing or blocking fluid as if it were always energized, regardless of what the computer commands. The result is a gear pattern that does not change correctly.
Will clearing P0752 fix the problem?
Clearing the code may restore normal shifting briefly, but if the solenoid or valve is truly sticking, the code will return once the module runs its check again.
Keep researching
More transmission codes
Sources
- SAE J2012 — Diagnostic Trouble Code Definitions (standard code titles)
- ISO 15031-6 — Road vehicles: communication between vehicle and external equipment for emissions-related diagnostics, Part 6: Diagnostic trouble code definitions
- U.S. EPA — Vehicle Emissions Inspection and Maintenance (I/M) programs
- U.S. EPA, 40 CFR 86.1806-17 — Federal onboard diagnostics requirements for light-duty vehicles
General information written by CarWhere Research, not a diagnosis of your vehicle. Manufacturers can add their own sub-definitions and test conditions; confirm with the factory service information for your year, make and model. Before paying for a repair, check NHTSA for open recalls and your warranty booklet: federal law requires an emissions warranty on major emission-control parts such as the catalytic converter and engine computer.