Powertrain, generic (extended)

P2727 Pressure Control Solenoid E Control Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Broken wire or backed-out pin
Open winding in solenoid E
Internal TCM fault (GM 8L90, PIP5646)
Connector not latched

Symptoms

  • MIL on and limp-home gear
  • Rear wheels may lock at low speed (GM 8L90 case)
  • Harsh or missing shifts

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,500
Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

pressure control solenoid ewiring harness

Related codes

P2725P2728P2729P2730P2718P2724

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov.