BMW DTC P3220 – CAN Message Monitoring SZL (Switch Cluster Steering Column) No Signal
DTC P3220 meaning on BMW
DTC P3220 on a BMW refers to a fault with the CAN Message Monitoring for the SZL (Switch Cluster Steering Column) system. This diagnostic trouble code indicates that the control module has detected no signal from the SZL module over the Controller Area Network (CAN) communication bus.
BMW DTC P3220 symptoms
Symptoms of DTC P3220 on a BMW may include:
- Malfunctioning steering column controls
- Loss of communication with the steering column module
- Warning lights on the dashboard
BMW DTC P3220 causes
Common causes of DTC P3220 on a BMW include:
- Faulty SZL module
- Wiring or connection issues in the CAN bus system
- Defective control module
BMW DTC P3220 seriousness
The seriousness of DTC P3220 on a BMW depends on the underlying cause. While the vehicle may still be operable, the loss of communication with the steering column module can affect the functionality of certain controls and safety features.
How to diagnose DTC P3220 on BMW
To diagnose DTC P3220 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the wiring and connections related to the SZL module
- Check for any visible damage or corrosion in the CAN bus system
- Test the SZL module for proper functionality
How to fix DTC P3220 on BMW
To fix DTC P3220 on a BMW, you may need to:
- Repair or replace any damaged wiring or connections
- Replace the faulty SZL module if necessary
- Reset the control module after making repairs
How to erase DTC P3220 on BMW
To erase DTC P3220 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the control module’s memory. After fixing the underlying issue, resetting the codes will turn off the warning lights on the dashboard.
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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