P217DFuel Injector Group H Supply Voltage 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
- Group H is the eighth injector group, on GM petrol 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.
- What you may notice
- Check engine lamp on, cylinder 8 misfire
- Several bank 2 injector codes at once if the connector is wet
- Likely causes
- LikelyCylinder 8 injector feed shorted in the harness
- PossibleWater in the bank 2 injector harness connector, Corvette LT6
- RareCylinder 8 injector shorted internally
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.