BMW DTC P1649 – Internal Control Module Random Access Memory (RAM) Writing Error
DTC P1649 meaning on BMW
The DTC P1649 on a BMW indicates an Internal Control Module Random Access Memory (RAM) Writing Error. This means that there is an issue with the module responsible for storing and accessing data in the vehicle’s memory.
BMW DTC P1649 symptoms
Symptoms of the BMW DTC P1649 may include:
- Check Engine Light illuminated
- Vehicle may experience performance issues
- Problems with starting the vehicle
BMW DTC P1649 causes
Common causes of the BMW DTC P1649 include:
- Corrupted memory data
- Internal control module malfunction
- Wiring or connection issues
BMW DTC P1649 seriousness
The seriousness of the BMW DTC P1649 depends on the extent of the issue. Ignoring this error code can lead to further damage to the vehicle’s control module and affect its overall performance.
How to diagnose DTC P1649 on BMW
To diagnose the DTC P1649 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the error code
- Inspect the control module and wiring for any visible damage
- Perform a memory test to check for data corruption
How to fix DTC P1649 on BMW
Fixing the BMW DTC P1649 may involve:
- Resetting the control module to clear the error code
- Repairing any wiring or connection issues
- Replacing the control module if necessary
How to erase DTC P1649 on BMW
To erase the DTC P1649 on a BMW, a mechanic can use a diagnostic scanner to clear the error code from the vehicle’s memory. Once the issue has been fixed, the code can be erased to reset the system.
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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