BMW DTC C1120 – Power Steering Control Module Random Access Memory (RAM) Error
DTC C1120 meaning on BMW
DTC C1120 on a BMW indicates a Power Steering Control Module Random Access Memory (RAM) Error. This error code is specifically related to an issue with the power steering control module’s RAM, which stores critical data for the proper functioning of the power steering system.
BMW DTC C1120 symptoms
Symptoms of DTC C1120 on a BMW may include:
- Loss of power steering assistance
- Stiff or heavy steering
- Warning lights on the dashboard related to the power steering system
BMW DTC C1120 causes
The common causes of DTC C1120 on a BMW include:
- Power steering control module internal failure
- Electrical issues such as wiring faults or poor connections
- Software glitches or programming errors
BMW DTC C1120 seriousness
The seriousness of DTC C1120 on a BMW lies in the potential loss of power steering assistance, which can make steering the vehicle difficult and unsafe. It is important to address this issue promptly to ensure the safe operation of the vehicle.
How to diagnose DTC C1120 on BMW
To diagnose DTC C1120 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the power steering control module.
- Inspect the power steering control module for any visible signs of damage or corrosion.
- Check the power steering system’s wiring and connections for any faults.
- Perform a reset of the power steering system and see if the error code returns.
How to fix DTC C1120 on BMW
To fix DTC C1120 on a BMW, you can try the following solutions:
- Replace the power steering control module if it is determined to be faulty.
- Repair any wiring issues or poor connections in the power steering system.
- Update the software of the power steering control module to address any programming errors.
How to erase DTC C1120 on BMW
To erase DTC C1120 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the power steering control module’s memory. Once the codes are cleared, you can reset the system and check if the error code reappears. If the issue persists, further diagnosis and repairs may be necessary.
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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