BMW DTC P0593 – Cruise Control Multi-Function Input ‘B’ Circuit High
DTC P0593 meaning on BMW
The Diagnostic Trouble Code (DTC) P0593 for BMW refers to the Cruise Control Multi-Function Input ‘B’ Circuit High. This code indicates that there is a high voltage condition detected in the cruise control multi-function input ‘B’ circuit.
BMW DTC P0593 symptoms
Symptoms of DTC P0593 on a BMW may include:
- Cruise control not functioning
- Check Engine Light (CEL) illuminated on the dashboard
- Vehicle may go into limp mode
BMW DTC P0593 causes
Common causes of DTC P0593 on a BMW include:
- Faulty cruise control switch
- Wiring issues in the cruise control system
- Defective cruise control module
BMW DTC P0593 seriousness
While DTC P0593 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 P0593 on BMW
To diagnose DTC P0593 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 corrosion.
- Test the cruise control module for proper functionality.
How to fix DTC P0593 on BMW
To fix DTC P0593 on a BMW, you can try the following:
- 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 P0593 on BMW
To erase DTC P0593 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. Once the issue has been addressed and fixed, you can reset the codes 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.