BMW DTC P1602 – Control Module Self-Test, Control Module Defective
DTC P1602 meaning on BMW
DTC P1602 for BMW refers to a Control Module Self-Test, Control Module Defective error code. This indicates that there is an issue with the control module’s self-test function, potentially due to a defective control module.
BMW DTC P1602 symptoms
Symptoms of DTC P1602 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Vehicle may go into limp mode
- Loss of power or performance issues
BMW DTC P1602 causes
The causes of DTC P1602 on a BMW can vary, but common reasons include:
- Defective control module
- Wiring or connection issues
- Software glitches
BMW DTC P1602 seriousness
The seriousness of DTC P1602 on a BMW depends on the underlying cause. Ignoring this error code can lead to further damage to the vehicle’s control module and potentially affect the vehicle’s performance and drivability.
How to diagnose DTC P1602 on BMW
To diagnose DTC P1602 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the error code
- Inspect the control module for any visible damage
- Check the wiring and connections related to the control module
How to fix DTC P1602 on BMW
Fixing DTC P1602 on a BMW may involve:
- Replacing the defective control module
- Repairing any damaged wiring or connections
- Updating the control module software
How to erase DTC P1602 on BMW
To erase DTC P1602 on a BMW, the error code can be cleared using a diagnostic scanner. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the system and turn off the Check Engine Light.
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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