P2734
Pressure Control Solenoid F Electrical
Automatic transmission
Generic OBD-II
Medium
What it means
P2734 means the control module has detected an electrical fault — an open or short — in transmission pressure control solenoid 'F' or its wiring. This solenoid regulates hydraulic pressure for shifting, so a fault typically causes harsh or erratic shifts or a limp mode. It is a transmission-side issue and does not stop the engine from starting.
Medium
Can I keep driving? Drivable, but shifts may be harsh or erratic and the transmission may go into limp mode. The engine still starts normally.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh, erratic, or delayed shifts
- Transmission limp mode (limited gears)
- Reduced fuel economy
Common causes
Most likely first
- Open or short in the pressure control solenoid 'F' electrical circuitLikely
- Damaged, corroded, or loose wiring or connector at the solenoidCommon
- Faulty pressure control solenoid 'F'Common
- Poor ground or a fault in the PCM/TCM driver circuitLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the solenoid wiring and connector for opens, shorts, or corrosion.
- Measure solenoid resistance and compare with the manufacturer's spec.
- Check the harness continuity from the control module to the solenoid, including grounds.
- Replace the solenoid or repair the wiring as indicated, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2734?+
Short trips may be okay, but an electrical fault can drop the transmission into limp mode. The engine still starts, but get it diagnosed soon.
Can I just clear P2734?+
It will return until the electrical fault in the solenoid or its wiring is repaired.
Related codes
Often seen with P2734
Read & clear P2734 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