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Home >> GMC >> 1999 >> Yukon Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes - DTC P0453-P0656 >> DTC P0461 >> DTC P0461: Fuel Level Sensor Circuit Performance (1.9L SATURN) >> Circuit Description
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Circuit Description

The PCM monitors resistance of fuel level sensor (tank sender) to calculate the amount of fuel in fuel tank, and provides voltage to tank sender through a resistor network and a return to PCM ground. If fuel level changes by less than 2 percent while driving 30 miles, DTC will set.