Powertrain, generic (extended)

P216A Fuel Injector Group E Supply Voltage Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Injector group E exists only on engines with at least five cylinders or five separately fed injector groups. GM petrol direct injection uses one group per cylinder, and its 2024 tables (24OBDG07) state it plainly: injector E is cylinder 5. The code covers the high-side feed of that injector. Despite the word open in the title, GM uses it for shorts: the 2008 3.6 LLT sets P216A for the high side of cylinder 5 shorted to ground or battery and leaves open circuits to P0205; the 2024 tables flag less than 0.5 ohm to ground with the driver off or to supply with it on, after two events above 9 V, one trip. GM bulletin PIP4924D lists P216A on 3.0 and 3.6 V6 engines whose injector harness rubbed through against the plenum, valve cover bolts or fuel line. Cylinder 5 misfires.

Likely causes

Injector harness rubbed through at the intake plenum, valve cover bolts or fuel line
Cylinder 5 injector shorted internally
High-side driver in the engine control module faulty

Symptoms

  • Check engine lamp on, often with a cylinder 5 misfire code
  • Rough running and reduced power

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

P216BP216CP216DP0205P0305P2146

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