P0745
Pressure Control Solenoid A
Transmission
Generic OBD-II
Medium
What it means
P0745 means the transmission's pressure control solenoid A — the valve that regulates hydraulic line pressure for shifting — is not responding correctly. Wrong line pressure leads to harsh, slipping, or delayed shifts, and the transmission may enter a protective limp mode. It is often caused by low or dirty fluid or a wiring fault, not just the solenoid itself.
Medium
Can I keep driving? Usually drivable, but expect harsh or slipping shifts and possible limp mode — get it looked at soon to avoid transmission wear.
Common symptoms
What you'll notice
- Harsh, delayed, or erratic gear shifts
- Transmission slips or fails to engage cleanly
- Transmission may drop into limp (failsafe) mode
- Check-engine light on
- Reduced fuel economy
Common causes
Most likely first
- Failed pressure control (line pressure) solenoid ALikely
- Low or contaminated transmission fluidCommon
- Damaged wiring or corroded connectors in the solenoid circuitCommon
- Restricted valve body or internal hydraulic faultLess often
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition first; top up or service if low, dirty, or burnt.
- Read freeze-frame data and inspect the solenoid connector and wiring for damage or corrosion.
- Measure the solenoid's resistance against spec and test its circuit; replace the solenoid if out of range.
- If wiring and solenoid check out, inspect the valve body for sticking or debris.
- Clear the code and road-test; suspect the TCM only after the above pass.
FAQ
Quick answers
Is it safe to drive with P0745?+
Short trips are usually fine, but slipping or harsh shifts and limp mode can accelerate transmission wear, so repair it soon.
Can I just clear P0745?+
You can, but if the solenoid, fluid, or wiring is at fault it will return — often quickly under load.
Related codes
Often seen with P0745
Read & clear P0745 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