Powertrain, generic (extended)

P2153 Fuel Injector Group C Supply Voltage Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2153 reports the third shared injector supply shorted toward ground. GM's 2018 Duramax tables use it only for the 6.6 L V8, where bank 3 feeds injectors 6 and 7; the four-cylinder 2.8 L has just two banks and never sets it. The criterion matches the other low codes – 0.5 Ω or less between a high-side pin and ground while the driver is on, 5 of 10 samples at 100 ms, type A. Ford lists group C among the injector driver checks of its 2023 diesels and flags shorts to ground or battery after about 0.2 s. On GM petrol direct injection, shown in the Saab 9-5 2.0T procedure, P2153 means low voltage on the high-side control line of cylinder 3, set after 1 s, type B. Open circuit and high fault of this group are P2152 and P2154.

Likely causes

Group C supply wire chafed and shorted to ground
Injector of group C shorted to its body
Moisture in the injector harness connector
Faulty injector driver in the engine control module

Symptoms

  • Misfire on the group C cylinders
  • Loss of power and vibration
  • 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

P2152P2154P2150P2156P0267

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