P2720
Pressure Control Solenoid D Control Circuit Low
Transmission
Generic OBD-II
Medium
What it means
P2720 means the control module has detected low voltage — usually a short to ground or an open — in the control circuit for pressure control solenoid 'D'. This solenoid regulates transmission line pressure, so the fault typically shows up as harsh shifting, slipping, or limp mode. It affects the transmission, not engine starting.
Medium
Can I keep driving? Drivable but likely with harsh shifts or limp mode. Prolonged driving with wrong line pressure can damage the transmission.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh or erratic shifts
- Transmission slipping or stuck in limp mode
- Delayed engagement into gear
Common causes
Most likely first
- Faulty pressure control (EPC) solenoid DLikely
- Short to ground or low-voltage fault in the solenoid circuitCommon
- Dirty or contaminated transmission fluidCommon
- Internal hydraulic leak or blockageLess often
- Faulty PCM/TCMLess often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition.
- Inspect the solenoid connector and wiring for a short to ground or an open.
- Test the pressure control solenoid's resistance.
- Have transmission line pressure checked.
- Replace the solenoid or repair wiring; the internal harness may be needed. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2720?+
Brief driving may be OK, but incorrect line pressure risks transmission damage. Get it diagnosed quickly.
Can I just clear P2720?+
It returns as soon as the circuit reads low again. Repair the solenoid or wiring first.
Related codes
Often seen with P2720
Read & clear P2720 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