Instrument Cluster General Malfunction
2024-2024 Tesla Model 3 Standard Range Single Motor RWD
The 2024 Tesla Model 3 is equipped with a Standard Range Single Motor RWD engine (RWD). Below you'll find detailed b0400 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
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
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0400 on Other Vehicles
Tesla Cybertruck
2024-2024 Cyberbeast Tri Motor AWD
Tesla Cybertruck
2024-2024 Dual Motor AWD
Tesla Cybertruck
2024-2024 Single Motor RWD
Tesla Model 3
2017-2017 Long Range Dual Motor AWD
Tesla Model 3
2017-2017 Performance Dual Motor AWD
Tesla Model 3
2017-2017 Standard Range Plus Single Motor RWD
Tesla Model 3
2018-2018 Long Range Dual Motor AWD
Tesla Model 3
2018-2018 Performance Dual Motor AWD
Common Questions
What does code B0400 mean on a 2024-2024 Tesla Model 3?
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 Tesla Model 3?
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 2024-2024 Tesla Model 3?
Common causes of B0400 include: Instrument cluster internal failure, Power supply issue to cluster, Communication bus fault, Corroded cluster connector, Software corruption.
Last updated: March 2026