Powertrain, generic (extended)

P217D Fuel Injector Group H Supply Voltage Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Cylinder 8 injector feed shorted in the harness
Water in the bank 2 injector harness connector, Corvette LT6
Cylinder 8 injector shorted internally

Symptoms

  • Check engine lamp on, cylinder 8 misfire
  • Several bank 2 injector codes at once if the connector is wet

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,500
Time1–5 h

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

Parts involved

fuel injectorinjector wiringengine control module

Related codes

P217EP217FP216DP2155P0208P0308

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