P2153Fuel Injector Group C Supply Voltage Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Misfire on the group C cylinders
- Loss of power and vibration
- Check engine lamp on
- Likely causes
- LikelyGroup C supply wire chafed and shorted to ground
- PossibleInjector of group C shorted to its body
- PossibleMoisture in the injector harness connector
- RareFaulty injector driver in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.