The P0596: Cruise Control Servo Control Circuit High refers to an issue where the cruise control system detects high voltage in the servo control circuit. This can be caused by a faulty servo control circuit, high voltage in the circuit, or wiring issues, which could impair the functionality of the cruise control system.
P0596 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0596: Cruise Control Servo Control Circuit High |
| Is it serious? | No, but it may prevent the cruise control system from working properly. |
| Possible causes | – Faulty servo control circuit – High voltage in circuit – Wiring issue |
| How to diagnose? | – Test servo control circuit for voltage – Inspect wiring and connectors – Test cruise control module |
P0596 Meaning
The P0596 code indicates that the cruise control system has detected higher-than-expected voltage in the servo control circuit. This could result from a fault in the servo control circuit, excess voltage, or wiring issues. This problem may cause improper cruise control operation or complete system failure.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional related codes that might provide more information. | OBD-II Scanner |
| Test the Servo Control Circuit | Use a multimeter to measure the voltage in the servo control circuit and ensure it is within the proper range. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors for damage, corrosion, or loose connections that could be causing high voltage. | Flashlight, Multimeter |
| Test the Cruise Control Module | Verify that the cruise control module is functioning correctly and not causing excessive voltage in the circuit. | Diagnostic Tool, Multimeter |
| Clear the Code and Test | After repairs, clear the code using an OBD-II scanner and test the cruise control system to ensure the problem has been resolved. | OBD-II Scanner, Vehicle Manual |
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