Fuel Gauge Circuit Malfunction
2020-2024 Citroën C4 Electric 🇩🇪
Description
The fuel gauge is not displaying correctly or is stuck at one position.
Symptoms
- Fuel gauge stuck on empty
- Fuel gauge stuck on full
- Fuel gauge reads erratically
- Low fuel warning inaccurate
Common Causes
- Faulty fuel level sending unit
- Instrument cluster gauge failure
- Wiring damage between tank and cluster
- Corroded fuel sender connector
- Float stuck in tank
Diagnostic Steps
- Check fuel sender resistance with scan tool
- Test gauge with simulated sender resistance
- Inspect fuel sender connector
- Test gauge stepper motor
- Check ground circuit
Repair Notes
Replace fuel level sending unit in tank or instrument cluster gauge. Check sender connector for corrosion.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0403 on Other Vehicles
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2020-2025 Electric 5.5kWh
Citroën Berlingo
2018-2024 1.2L I3 PureTech
Citroën Berlingo
2018-2024 1.5L I4 BlueHDi
Citroën Berlingo
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo
2018-2025 1.5L I4 Diesel BlueHDi 100
Citroën Berlingo
2021-2025 Electric e-Berlingo 50kWh
Citroën Berlingo III FR
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo III FR
2018-2025 1.5L I4 Diesel BlueHDi 100
Common Questions
What does code B0403 mean on a 2020-2024 Citroën C4?
B0403 stands for "Fuel Gauge Circuit Malfunction". The fuel gauge is not displaying correctly or is stuck at one position.
What are the symptoms of B0403 on a Citroën C4?
Common symptoms of B0403 include: Fuel gauge stuck on empty, Fuel gauge stuck on full, Fuel gauge reads erratically, Low fuel warning inaccurate.
What causes B0403 on a 2020-2024 Citroën C4?
Common causes of B0403 include: Faulty fuel level sending unit, Instrument cluster gauge failure, Wiring damage between tank and cluster, Corroded fuel sender connector, Float stuck in tank.