P0747
Pressure Control Solenoid A Stuck On
Transmission / pressure control
Generic OBD-II
Medium
What it means
P0747 means the transmission's pressure control solenoid "A" is stuck in the applied (on) position, so the module can no longer regulate hydraulic line pressure. The result is usually harsh or firm shifts, holding gears too long, and extra heat — which can shorten transmission life if left unaddressed.
Medium
Can I keep driving? Usually drivable, but shifts may be harsh or the transmission may drop into limp mode — drive gently and get it fixed soon to avoid heat damage.
Common symptoms
What you'll notice
- Harsh, firm, or delayed shifts
- Transmission slipping or holding a gear too long
- Check-engine light on
- Transmission running hot
- Limp mode (stuck in one gear)
Common causes
Most likely first
- Failed or mechanically stuck pressure control solenoid ALikely
- Damaged wiring or a poor connector at the solenoid circuitCommon
- Low or dirty transmission fluid affecting line pressureCommon
- Debris or wear in the valve body holding the solenoid openLess often
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Scan for codes and read freeze-frame data to confirm the fault and conditions.
- Check transmission fluid level and condition first — low or burnt fluid alone can trigger this.
- Inspect the solenoid wiring and connector for damage, corrosion, or loose pins.
- Test the pressure control solenoid's resistance and operation against spec.
- If the solenoid and wiring are good, inspect the valve body; replace the TCM only as a last resort. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0747?+
Short trips are usually fine, but stuck-high line pressure causes harsh shifts and extra heat that can wear the transmission over time. Get it addressed promptly.
Can I just clear P0747?+
It will clear, but returns once the transmission relearns pressure unless the stuck solenoid, wiring, or fluid problem is fixed.
Related codes
Often seen with P0747
Read & clear P0747 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX