P2727 is set when the control circuit of solenoid E is open, so no current can flow through the coil. GM's eight-speed table checks the clutch 5 valve for an open-circuit flag over 0.3 s, and on the Allison 1000 the test on PCS 1 is rated Type A. The 2023 Corvette dual-clutch TCM looks at its system pressure pilot valve while switched off: a sense voltage between roughly 1.7 and 3.0 V means open load, confirmed after 150 ms (Type A). Ford's TR9070 maps open load of its line pressure pilot valve to the same code. A field case without wiring damage exists: GM's PIP5646 series for 2019-2020 Silverado and Sierra with the 8L90 names P2727 among the codes behind sudden rear-wheel lock-up and replaces the TCM.
Medium severity. Can I keep driving?Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
Symptoms
- MIL on and limp-home gear
- Rear wheels may lock at low speed (GM 8L90 case)
- Harsh or missing shifts
Most likely causes
- Broken wire or backed-out pin
- Open winding in solenoid E
- Internal TCM fault (GM 8L90, PIP5646)
- Connector not latched
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It can trigger limp mode.
- It affects emissions.
What each character of P2727 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 7: Transmission
- 27: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2727?
Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
What causes code P2727?
The most common causes are: broken wire or backed-out pin; open winding in solenoid E; internal TCM fault (GM 8L90, PIP5646).
Related codes
- P2725Pressure Control Solenoid E Electrical
- P2728Pressure Control Solenoid E Control Circuit Range/Performance
- P2729Pressure Control Solenoid E Control Circuit Low
- P2730Pressure Control Solenoid E Control Circuit High
- P2718Pressure Control Solenoid D Control Circuit/Open
- P2724Pressure Control Solenoid E Stuck On
Sources
- gsi.ext.gm.com: 16OBDG03 Transmission Diagnostics
- gsi.ext.gm.com: 17OBDG04 Transmisson Diagnostics
- gsi.ext.gm.com: 23OBDG07
- static.nhtsa.gov: MC 10165891 9999
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.