The P0282 code on your 2019 Nissan Titan indicates a low voltage condition in the cylinder 8 fuel injector circuit. The Titan's V8 engine needs all eight cylinders operating properly for its full-size truck capability.
Titan V8 Engine
The 2019 Nissan Titan uses the 5.6L Endurance V8 producing 390 horsepower. This powerful engine uses port fuel injection. On Nissan V8s, cylinder 8 is located at the rear of the passenger side bank—the cylinder closest to the firewall and transmission.
Low Circuit Diagnosis
A low voltage reading indicates a short to ground somewhere in the cylinder 8 circuit. The injector coil may have developed internal shorts, wiring insulation may be damaged and contacting metal, or corrosion in the connector creates ground paths. Heat from the nearby exhaust can accelerate these failures.
Testing Procedure
Access cylinder 8 at the rear of the passenger bank. Disconnect the injector and measure coil resistance—expect approximately 12-14 ohms for Titan injectors. Test for low resistance between the circuit wires and ground. Examine the wiring carefully, especially near exhaust crossover pipes and heat shields.
Repair Approach
Shorted injectors need replacement. Titan V8 injectors are reasonably priced and accessible. For wiring issues, repair the short and add heat protection where needed. The rear cylinder location requires patience but isn't prohibitively difficult. After repair, verify the big V8 runs smoothly on all eight.