P2727Pressure Control Solenoid E Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- MIL on and limp-home gear
- Rear wheels may lock at low speed (GM 8L90 case)
- Harsh or missing shifts
- Likely causes
- LikelyBroken wire or backed-out pin
- PossibleOpen winding in solenoid E
- PossibleInternal TCM fault (GM 8L90, PIP5646)
- RareConnector not latched
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.