p2146 = Fuel Injector Group A Supply Voltage Circ/Open
The circuits or injectors for cylinders 1, 2, or 3 have an electrical problem.
Trouble code P2146 means: Fuel Injector Group "A" Supply Voltage Circuit/Open
Code P2146 for a 6.6L Duramax engine indicates a problem with the fuel injector control circuit, specifically related to the fuel injector group A circuit. This can be caused by issues such as a faulty injector, damaged wiring, or a malfunctioning engine control module (ECM). Diagnosing the issue typically involves inspecting the wiring and connectors, checking injector resistance, and possibly replacing faulty components. Addressing this code is crucial for proper engine performance and fuel efficiency.
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