BMW DTC P0649 – Speed Control Lamp Control Circuit
DTC P0649 meaning on BMW
DTC P0649 on a BMW refers to the Speed Control Lamp Control Circuit. This diagnostic trouble code indicates that there is a malfunction in the circuit responsible for controlling the speed control lamp.
BMW DTC P0649 symptoms
Symptoms of DTC P0649 on a BMW may include:
- Speed control lamp not functioning
- Check Engine Light illuminated
- Speed control system not working properly
BMW DTC P0649 causes
Common causes of DTC P0649 on a BMW include:
- Faulty speed control lamp
- Wiring issues in the speed control lamp circuit
- Defective speed control lamp control module
BMW DTC P0649 seriousness
While DTC P0649 may not directly affect the drivability of the vehicle, it is important to address this issue as it can impact the functionality of the speed control system. Ignoring this code may result in the speed control system not working as intended.
How to diagnose DTC P0649 on BMW
To diagnose DTC P0649 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the speed control lamp for any visible damage
- Check the wiring and connectors in the speed control lamp circuit for any issues
- Test the speed control lamp control module for proper functionality
How to fix DTC P0649 on BMW
To fix DTC P0649 on a BMW, you can try the following:
- Replace the faulty speed control lamp if necessary
- Repair any damaged wiring or connectors in the speed control lamp circuit
- Replace the speed control lamp control module if it is found to be defective
How to erase DTC P0649 on BMW
To erase DTC P0649 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. Once the issue has been addressed and fixed, you can reset the code to 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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