B0400
Instrument Cluster General Malfunction
1999-2000 BMW 528iT E39 2.8L I6 🇨🇦
Moderate SeverityBody
Description
A general fault detected in the instrument cluster module. Multiple gauges or indicators may be affected.
Symptoms
- Multiple gauges not working
- Instrument cluster dark
- Gauges reading incorrectly
- Warning lights erratic
- Odometer display blank
Common Causes
- Instrument cluster internal failure
- Power supply issue to cluster
- Communication bus fault
- Corroded cluster connector
- Software corruption
Diagnostic Steps
- Check cluster power and ground
- Scan cluster for stored codes
- Test CAN bus communication to cluster
- Inspect cluster connector for corrosion
- Attempt cluster self-test if available
Repair Notes
Replace instrument cluster or repair power supply. Cluster may need to be programmed with vehicle mileage.
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
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0400 on Other Vehicles
Common Questions
What does code B0400 mean on a 1999-2000 BMW 528iT E39?
B0400 stands for "Instrument Cluster General Malfunction". A general fault detected in the instrument cluster module. Multiple gauges or indicators may be affected.
What are the symptoms of B0400 on a BMW 528iT E39?
Common symptoms of B0400 include: Multiple gauges not working, Instrument cluster dark, Gauges reading incorrectly, Warning lights erratic, Odometer display blank.
What causes B0400 on a 1999-2000 BMW 528iT E39?
Common causes of B0400 include: Instrument cluster internal failure, Power supply issue to cluster, Communication bus fault, Corroded cluster connector, Software corruption.