P217D code meaning
Fuel Injector Group H Supply Voltage Circuit/Open
Powertrain system Generic code P21xx codes Check engine light
What P217D means
Group H is the eighth injector group, on GM gasoline direct injection the injector of cylinder 8, the last one on bank 2 of a V8. GM's 2023 and 2024 tables call it injector H and use P217D when its high side shows less than 0.5 ohm to ground with the driver off or to the injector supply with the driver on; two events above 9 V store the code in one trip. GM's service texts refer to it as the high control circuit of the cylinder 8 injector. Bulletin 24-NA-106 for the 2023 and 2024 Corvette with the 5.5 LT6 shows how a common cause hits a whole bank: water getting into a wrong twelve-pin intermediate connector to the bank 2 injector harness set P2149, P2155, P216D and P217D, the even cylinders, together with rail pressure codes. The fix is a connector with the correct part number.
P217D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P217D
- Check engine lamp on, cylinder 8 misfire
- Several bank 2 injector codes at once if the connector is wet
Common causes of P217D
- Most likelyCylinder 8 injector feed shorted in the harness
- PossibleWater in the bank 2 injector harness connector, Corvette LT6
- Less likelyCylinder 8 injector shorted internally
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Fuel injectorInjector wiringEngine control module
What each part of P217D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 7D | The exact fault in that area. |
What to do next
- Note P217D 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 P217D
What does P217D mean?
P217D means "Fuel Injector Group H Supply Voltage Circuit/Open". Group H is the eighth injector group, on GM gasoline direct injection the injector of cylinder 8, the last one on bank 2 of a V8. It is a generic code, so it means the same on every make.
Is it safe to drive with P217D?
Drive gently and only to a workshop. With P217D the car can go into limp mode (reduced power) to protect itself.
Will P217D fail an emissions test?
Yes, it can. P217D 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 P217D to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P217D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.