P2718Pressure Control Solenoid D 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
- P2718 points to an open control circuit of solenoid D: the coil draws no current because a wire, pin or the winding itself is broken. GM's 2016 eight-speed table runs the open check on the clutch 4 valve and fails it after 0.3 s within a 0.5 s window (one trip); the 2017 and 2018 nine-speed tables use an impedance measurement. In 2018 GM issued service update N182193520 for 8L45 and 8L90 units in Camaro, Colorado, Corvette, Silverado and others because the valve body connector might not be fully seated, setting P2718 or P2720 and forcing limp-home. For the even-clutch shutdown valve of the 2023 Corvette dual-clutch box, it stands for open load, seen while switched off (Type A); Ford's TR9070 also files open load here.
- What you may notice
- Limp-home mode with limited forward gears
- MIL on immediately
- Harsh engagements
- Likely causes
- LikelyValve body solenoid connector not fully seated (GM 8L45/8L90)
- PossibleBroken wire or pushed-out pin in the harness
- PossibleOpen winding in solenoid D
- RareTCM output stage fault
- 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 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.