P2146 to P2157, P0611, P0612, P0618 and P0619: injector group supply and injector control modules
The supply circuit that feeds a group of injectors (A to D) is open, low or high, the injector control module or its relay has a fault, or the alternative fuel control module reports a memory fault.
SeverityHighCarrying on can cause expensive damage, so deal with it now.
Can you keep driving?Only as far as the workshopWhat does P2146 mean?
On many diesels and direct injection gasoline engines, the injectors need a high driving voltage, generated inside the engine computer or a separate injector control module and shared by groups of injectors. If one group's supply fails, every cylinder in that group stops firing at once, so the engine runs very roughly or not at all. Cars converted to run on gas from the factory have an alternative fuel control module, and its memory errors cover that system.
What causes P2146?
- A short in one injector or its wire pulling down the whole group
- A damaged injector harness, often under the valve cover
- A failed injector control module or its relay
- A poor ground or supply to the engine computer
- A fault inside the alternative fuel control module, for P0618 and P0619
What to check first for P2146
- Note which cylinders misfire: they show which group has lost its supply
- Unplug the injectors in that group one at a time to find a shorted one
- Inspect the injector harness for chafing and oil
- Check the injector control module's relay and supply
Can you drive with P2146?
Drive only to a workshop, and only if the engine runs smoothly. If several cylinders misfire at once, the engine shakes or loses power, stop and have the car towed.
In states with an OBD-II emissions inspection, a car with the check engine light on fails the test until the fault is fixed.
Codes on this page
16
- P0611Fuel Injector Control Module Performance
- P0612Fuel Injector Control Module Relay Control
- P0618Alternative Fuel Control Module KAM Error
- P0619Alternative Fuel Control Module RAM/ROM Error
- P2146Fuel Injector Group "A" Supply Voltage Circuit/Open
- P2147Fuel Injector Group "A" Supply Voltage Circuit Low
- P2148Fuel Injector Group "A" Supply Voltage Circuit High
- P2149Fuel Injector Group "B" Supply Voltage Circuit/Open
- P2150Fuel Injector Group "B" Supply Voltage Circuit Low
- P2151Fuel Injector Group "B" Supply Voltage Circuit High
- P2152Fuel Injector Group "C" Supply Voltage Circuit/Open
- P2153Fuel Injector Group "C" Supply Voltage Circuit Low
- P2154Fuel Injector Group "C" Supply Voltage Circuit High
- P2155Fuel Injector Group "D" Supply Voltage Circuit/Open
- P2156Fuel Injector Group "D" Supply Voltage Circuit Low
- P2157Fuel Injector Group "D" Supply Voltage Circuit High
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
