BMW DTC C0078 – Tire Diameter
DTC C0078 meaning on BMW
DTC C0078 on a BMW refers to an issue related to tire diameter. This diagnostic trouble code indicates that there is a discrepancy in the diameter of the tires on the vehicle, which can affect the proper functioning of the vehicle’s systems that rely on accurate wheel speed data.
BMW DTC C0078 symptoms
Symptoms of DTC C0078 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Inaccurate speedometer readings
- Possible loss of stability control
BMW DTC C0078 causes
The common causes of DTC C0078 on a BMW include:
- Uneven tire wear
- Incorrect tire size or type installed
- Wheel speed sensor malfunction
- Issues with the ABS or traction control system
BMW DTC C0078 seriousness
DTC C0078 should be taken seriously as it can affect the proper functioning of important safety systems in the vehicle. Driving with this fault unresolved may compromise the vehicle’s stability and handling, especially in adverse road conditions.
How to diagnose DTC C0078 on BMW
To diagnose DTC C0078 on a BMW, you can:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the tires for proper size and wear
- Check the wheel speed sensors for any damage or malfunction
- Perform a visual inspection of the ABS and traction control systems
How to fix DTC C0078 on BMW
To fix DTC C0078 on a BMW, you may need to:
- Ensure all tires are of the correct size and type
- Replace any worn or damaged tires
- Inspect and replace faulty wheel speed sensors
- Reset the fault codes using a diagnostic scanner
How to erase DTC C0078 on BMW
To erase DTC C0078 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes
- Ensure the underlying issue causing the fault code has been resolved
- Perform a test drive to confirm the fault code does not reappear
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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