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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 669 (Instrument Panel, Gages, And Console) >> Diagnostic Information and Procedures >> DTC P1431 (W/FFS): No Change In Right Fuel Tank Fuel Level Over Distance >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The right fuel level sensor measures fuel level changes within the right fuel tank.

When the fuel level is high the sensor signal voltage is high. When the fuel level is low the sensor signal voltage is low.

The powertrain control module (PCM) uses inputs from the left fuel level sensor and the right fuel level sensor in order to calculate the total fuel remaining in both fuel tanks. The PCM sends this information via class 2 to the IPC.

This diagnostic tests for a stuck right fuel level sensor signal. If the PCM determines that the fuel level (right tank) signal appears to be stuck based on a lack of signal variation expected during normal operation, this DTC sets.

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