P0596 – BMW DTC

BMW DTC P0596 – Cruise Control Servo Control Circuit High

DTC P0596 meaning on BMW

DTC P0596 on a BMW indicates a fault in the cruise control servo control circuit, specifically a high voltage condition. This fault code is triggered when the engine control module (ECM) detects that the voltage in the cruise control servo control circuit is higher than the specified range.

BMW DTC P0596 symptoms

Symptoms of DTC P0596 on a BMW may include:

• Malfunctioning cruise control system
• Cruise control not engaging or maintaining speed
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0596 causes

The common causes of DTC P0596 on a BMW include:

• Faulty cruise control servo
• Short circuit or open circuit in the cruise control servo control circuit
• Corroded or damaged wiring in the cruise control system
• Defective engine control module (ECM)

BMW DTC P0596 seriousness

While DTC P0596 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 promptly to ensure proper operation of the cruise control feature.

How to diagnose DTC P0596 on BMW

To diagnose DTC P0596 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data.
2. Inspect the cruise control servo and its wiring for any visible damage or corrosion.
3. Check the cruise control servo control circuit for continuity and proper voltage levels.
4. Test the cruise control system components for proper operation.

How to fix DTC P0596 on BMW

To fix DTC P0596 on a BMW, consider the following:

1. Replace the faulty cruise control servo if necessary.
2. Repair any damaged or corroded wiring in the cruise control system.
3. Ensure all connections in the cruise control servo control circuit are secure and free of debris.
4. If needed, replace the engine control module (ECM) to address any internal faults.

How to erase DTC P0596 on BMW

To erase DTC P0596 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light and allow you to monitor the system for any recurring problems.

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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