BMW DTC P1933 – Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 4
DTC P1933 meaning on BMW
The DTC P1933 on a BMW refers to an Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 4. This error code indicates a fault in the transmission control module’s internal monitoring system, which has triggered the transmission to go into a limp home mode.
BMW DTC P1933 symptoms
Symptoms of the BMW DTC P1933 may include:
- Transmission shifting issues
- Limp mode activation
- Warning lights on the dashboard
- Reduced engine performance
BMW DTC P1933 causes
Common causes of the BMW DTC P1933 error code include:
- Faulty transmission control module
- Internal software malfunction
- Wiring or connection issues
- Low transmission fluid level
BMW DTC P1933 seriousness
The DTC P1933 error code should be addressed promptly as it can lead to drivability issues and potential damage to the transmission system if left unresolved. Driving the vehicle in limp mode for an extended period can also cause further complications.
How to diagnose DTC P1933 on BMW
To diagnose the DTC P1933 on a BMW, a comprehensive scan tool capable of reading transmission fault codes is required. The following steps can be taken:
- Retrieve the error code using a diagnostic scanner
- Check the transmission control module for any visible damage
- Inspect the wiring and connections for any signs of wear or corrosion
- Verify the transmission fluid level and condition
How to fix DTC P1933 on BMW
To fix the DTC P1933 on a BMW, the following steps can be taken:
- Address any underlying issues such as faulty transmission control module or internal software malfunction
- Repair or replace any damaged wiring or connections
- Ensure the transmission fluid level is at the correct level and top up if necessary
- Clear the error code using a diagnostic scanner
How to erase DTC P1933 on BMW
To erase the DTC P1933 on a BMW, follow these steps:
- Connect a diagnostic scanner to the vehicle’s OBD-II port
- Select the option to clear fault codes from the transmission control module
- Follow the on-screen prompts to erase the DTC P1933 code
- Verify that the code has been successfully cleared by rescanning 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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