Powertrain, generic (extended)

P216F Fuel Injector Group F Supply Voltage Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P216F is set when the group F supply, on GM petrol direct injection the high-side line of cylinder 6, shows voltage while the driver is off. GM's criterion in its 2016 (16OBDG07A) and 2018 LT4 tables is 1 V or less between the line and the controller supply, which means the wire is practically at battery level. At 11 V or more, 10 failures out of 20 samples at 100 ms store it as type A, MIL on the first trip. A short to power can keep current flowing through the injector or overload the driver, so the module disables that cylinder. Look for insulation damage where the harness meets brackets or the transmission, as described for the Impala in PI0631H, and for a connector bridged by moisture. Several high codes on different cylinders at once point to the module. P216E is the short to ground.

Likely causes

Cylinder 6 feed shorted to another powered wire
Engine control module driver fault, especially with several high codes
Moisture in the injector connector

Symptoms

  • Check engine lamp on immediately
  • Cylinder 6 misfire

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

P216DP216EP216CP0277P0306

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