BMW DTC P0590 – Cruise Control Multi-Function Input ‘B’ Circuit Stuck
DTC P0590 meaning on BMW
The Diagnostic Trouble Code (DTC) P0590 for BMW refers to the Cruise Control Multi-Function Input ‘B’ Circuit being stuck. This code indicates that there is a malfunction in the cruise control system’s input circuit ‘B’, which is responsible for receiving signals related to the cruise control functions.
BMW DTC P0590 symptoms
Symptoms of the DTC P0590 on a BMW may include:
- Malfunctioning cruise control system
- Cruise control not engaging or disengaging properly
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0590 causes
Common causes of the DTC P0590 on a BMW include:
- Faulty cruise control switch
- Wiring issues in the cruise control system
- Defective cruise control module
BMW DTC P0590 seriousness
While the DTC P0590 may not directly affect the drivability of the vehicle, it can impact the functionality of the cruise control system. It is recommended to address this issue to ensure proper operation of the cruise control feature.
How to diagnose DTC P0590 on BMW
To diagnose the DTC P0590 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer.
- Inspect the cruise control switch and wiring for any visible damage or loose connections.
- Test the cruise control module for proper functionality.
How to fix DTC P0590 on BMW
To fix the DTC P0590 on a BMW, you can try the following solutions:
- Replace the faulty cruise control switch if necessary.
- Repair any damaged wiring in the cruise control system.
- If the cruise control module is defective, consider replacing it with a new one.
How to erase DTC P0590 on BMW
To erase the DTC P0590 on a BMW, you can clear the fault codes using a diagnostic scanner. After addressing the underlying issue causing the fault code, you can reset the codes to turn off the Check Engine Light and ensure that the cruise control system functions properly.
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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