Powertrain, generic (extended)

P2720 Pressure Control Solenoid D Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2720 reports a low signal on the control line of solenoid D, which in practice is a short to ground. GM's 2016 eight-speed table sets it on the clutch 4 valve after a 0.3 s ground-short flag within one trip; the six-speed tables do the same for their valve D. On the 2023 Corvette dual-clutch transmission the TCM checks the line while the low-side driver is on: if the sense voltage stays under about 1.7 V for at least 100 ms, the even-clutch shutdown valve is shorted to ground (Type A). Ford's TR9070 logs its shorted switch case under this code. GM's service update N182193520 names P2720 next to P2718 when the 8L45/8L90 valve body connector is not fully latched, so a poor connection can produce it as well as a pinched wire.

Likely causes

Control wire pinched or chafed against ground
Valve body connector not fully seated
Internally shorted solenoid D
TCM driver fault

Symptoms

  • MIL on and limp-home operation
  • Limited forward gears
  • Harsh shifts

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,200
Time0.5–5 h

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

Parts involved

pressure control solenoid dwiring harness

Related codes

P2716P2718P2719P2721P2729P0962

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