No. 1 And 4 Cylinder Fuel Injector Power Supply Circuit Open
Table of contents
P2146 NISSAN Possible Causes
- Faulty Fuel Injector No. 1 And 4
- Fuel Injector No. 1 And 4 harness is open or shorted
- Fuel Injector No. 1 And 4 circuit poor electrical connection
How do I fix code P2146 NISSAN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2146 NISSAN code
The cost of diagnosing the P2146 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2146 NISSAN Description
The fuel injector is a small, precise solenoid valve. When the Engine Control Module (ECM) supplies a ground to the fuel injector circuit, the coil in the fuel injector is energized. The energized coil pulls the needle valve back and allows fuel to flow through the fuel injector into the cylinder. The amount of fuel injected depends upon the injection pulse duration. Pulse duration is the length of time the fuel injector remains open. The ECM controls the injection pulse duration based on engine fuel needs.