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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (2.9L Pcm 2 - DTCS P2240-00 To U143B-00) >> DTC Troubleshooting >> U1403-00-Implausible Fuel Level Signal Received >> Theory Of Operation

Theory Of Operation

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The Fuel Level Sensor signal is a direct input to the Body Control Module (BCM). The BCM transmits the fuel level message to the Powertrain Control Module (PCM) over the CAN C bus.