P2066 2014 Chevrolet Silverado Code - Fuel Level Sensor 2 Performance

P2066 indicates a performance issue with Fuel Level Sensor 2, which monitors the fuel level in one of the tanks or sections of the fuel system.

Symptoms include inaccurate fuel gauge readings, erratic fuel gauge movement, longer crank times, and potentially the illumination of the check engine light.

Common causes include a faulty fuel level sensor, wiring issues like corrosion or damage, poor electrical connections, or a malfunction in the fuel pump module.

Typically, a faulty fuel level sensor does not directly cause drivability issues but can lead to miscalculations in fuel range, potentially causing the truck to run out of fuel unexpectedly.

Diagnosis involves using an OBDII scanner to confirm the code, inspecting wiring and connections to the fuel level sensor, and testing the sensor for proper resistance values.

While the vehicle may still be drivable, it’s not recommended as inaccurate fuel readings could lead to running out of fuel or other complications.

Repairs may include replacing the faulty fuel level sensor, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the fuel pump module if necessary.

Repair costs can vary but typically range from $200 to $800, depending on whether the fuel level sensor alone or the entire fuel pump module needs replacement.

Yes, in vehicles with dual tanks or a saddle tank system, the code pertains to the second fuel level sensor, which monitors one side of the system.

While rare, a software update to the vehicle’s engine control module (ECM) could resolve calibration issues, but this is typically only done after confirming no hardware faults.