Powertrain, generic (extended)

P2152 Fuel Injector Group C Supply Voltage Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2152 belongs to the third shared injector supply, so it appears only on engines with at least three injector groups or, at GM petrol engines, at least three cylinders. GM's 2009 Duramax puts injectors 2 and 5 into group 3 and flags an open, short or missing load after 6 ms, type A. VW's 2014 Touareg V6 TDI stores it when the diagnostic signal of the group C power stage fails, and the Passat VR6 allows a wider high-side window for this group, below 2.3 A or above 18.6 A. In GM petrol direct injection it covers the high-side control line of cylinder 3; GM bulletin PIP4924D lists it among injector codes on 3.0 L and 3.6 L V6 engines whose injector harness rubs through. Misfire on the related cylinders is the usual effect.

Likely causes

Injector harness rubbed through at plenum, bolts or fuel line
Loose or corroded injector connector
Open coil or piezo stack in an injector of the group
Faulty power stage in the engine control module

Symptoms

  • Misfire on the group C cylinders
  • Rough running, reduced power
  • Check engine lamp on

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

P2149P2153P2154P2155P0203

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