Engine-Codes - Generic - U1403

U1403 - Implausible Fuel Level Signal Received

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1403 Possible Causes

  • Faulty Powertrain Control Module (PCM)
  • Powertrain Control Module harness is open or shorted
  • Powertrain Control Module circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How is the U1403 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U1403 code

Labor: 1.0

The cost to diagnose the U1403 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U1403 Meaning

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 Controller Area Network (CAN) C bus. The Diagnostic Trouble Code (DTC) sets when the fuel level message that the Powertrain Control Module (PCM) is receiving is implausible. The circuit is continuously monitored.

More Information

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