Powertrain, generic (extended)

P217F Fuel Injector Group H Supply Voltage Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P217F is the last code of the injector group series: the feed of group H, cylinder 8 on GM's direct-injection V8 engines, shows supply voltage although the high-side driver is switched off. GM's tables 16OBDG07A, 18OBDG03A for the 6.2 LT4 and 19OBDG03A set it when the line stays within 1 V of the controller supply, counting 10 failures out of 20 samples at 100 ms with 11 V or more, type A, MIL on the first trip. A short to power can hold the injector partly open or stress the driver, so the module cuts cylinder 8. Wiring that touches a powered conductor, moisture in the plug or a failing module output are the candidates; high codes on several cylinders together suggest the module. P217E is the short to ground, P217D the general fault.

Likely causes

Cylinder 8 feed shorted to a powered wire
Moisture or corrosion in the injector connector
Engine control module output stage faulty

Symptoms

  • Check engine lamp on immediately
  • Cylinder 8 misfire, possibly rich running on bank 2

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–2,000
Time0.8–5 h

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

Parts involved

fuel injectorinjector wiringengine control module

Related codes

P217DP217EP217CP0283P0308

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com.