P2718 code meaning
Pressure Control Solenoid D Control Circuit/Open
Powertrain system Generic code P27xx codes Check engine light
What P2718 means
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.
P2718 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2718
- Limp-home mode with limited forward gears
- MIL on immediately
- Harsh engagements
Common causes of P2718
- Most likelyValve body solenoid connector not fully seated (GM 8L45/8L90)
- PossibleBroken wire or pushed-out pin in the harness
- PossibleOpen winding in solenoid D
- Less likelyTCM output stage fault
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid dWiring harness
What each part of P2718 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 18 | The exact fault in that area. |
What to do next
- Note P2718 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2718
What does P2718 mean?
P2718 means "Pressure Control Solenoid D Control Circuit/Open". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P2718?
Drive gently and only to a workshop. With P2718 the car can go into limp mode (reduced power) to protect itself.
Will P2718 fail an emissions test?
Yes, it can. P2718 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2718 to fix?
Difficulty: medium. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P2718 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.