P0750 Code: Shift Solenoid A — Causes & Fix
P0750 means a fault in shift solenoid "A" — one of the electro-hydraulic valves the transmission uses to change gears.
- Applies to
- All OBD-II vehicles (any make or model)
- Est. repair cost
- $80 – $1,200
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a failed shift solenoid, low/dirty fluid, a valve-body fault, or wiring/connector problems. P0750 is a generic OBD-II powertrain code defined in the SAE J2012 standard, so it applies to virtually any 1996-or-newer petrol car or light truck regardless of make. Fix the underlying fault, then clear the code with an OBD-II scan tool — it will return if the problem isn't resolved.
Symptoms
- Check engine light on
- Harsh, delayed, or missing shifts
- Possible limp mode (stuck in one gear)
How to fix it
- 1
Check fluid and wiring
1. Check transmission fluid level and condition. 2. Inspect the solenoid connector/wiring.
- 2
Test and replace the solenoid
1. Test shift solenoid A operation. 2. Replace it (usually inside the pan/valve body), then clear the code.
Frequently asked questions
Can low fluid cause P0750?
Yes — low or degraded transmission fluid affects solenoid operation and shift quality. Check fluid before replacing parts.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.