BMW DTC C1129 – Power Steering Control Module Read Only Memory (ROM) Error
DTC C1129 meaning on BMW
DTC C1129 on a BMW refers to a Power Steering Control Module Read Only Memory (ROM) Error. This error code indicates that there is an issue with the ROM data in the power steering control module of the vehicle.
BMW DTC C1129 symptoms
Symptoms of DTC C1129 on a BMW may include:
- Loss of power steering assistance
- Stiff or heavy steering
- Warning light on the dashboard
BMW DTC C1129 causes
Common causes of DTC C1129 on a BMW include:
- Corrupted or faulty ROM data in the power steering control module
- Issues with the power steering control module itself
- Electrical faults or wiring issues
BMW DTC C1129 seriousness
The seriousness of DTC C1129 on a BMW depends on the extent of the issue. While it may initially cause inconvenience due to the loss of power steering assistance, it can potentially lead to safety concerns if not addressed promptly.
How to diagnose DTC C1129 on BMW
To diagnose DTC C1129 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the error code
- Inspect the power steering control module for any visible damage
- Check the wiring and connections related to the power steering system
How to fix DTC C1129 on BMW
To fix DTC C1129 on a BMW, the following steps may be taken:
- Resetting the power steering control module
- Updating or reprogramming the ROM data in the module
- Replacing the power steering control module if necessary
- Addressing any underlying electrical or wiring issues
How to erase DTC C1129 on BMW
To erase DTC C1129 on a BMW, the error code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is important to address the root cause of the issue to prevent the code from reoccurring.
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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