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OBD Code P0595

Cruise Control Servo Control Circuit Low

CodeP0595
DescriptionCruise Control Servo Control Circuit Low
Possible CausesShort to ground|Faulty servo
SymptomsCruise throttle error
SystemSpeed/Idle

What Does P0595 Mean?

Cruise Control Servo Control Circuit Low. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the speed/idle.

Code Breakdown

P = Powertrain code

0 = Generic (SAE standard)

How to Fix P0595

Follow these diagnostic steps to identify and resolve the issue. Always start with the simplest checks before moving to more involved repairs.

  1. Check the brake light switch — it must release properly to allow cruise control engagement.
  2. Test the cruise control switches on the steering wheel.
  3. Inspect the clockspring if cruise control buttons stopped working with other steering wheel controls.
  4. Check the vehicle speed signal — cruise control needs an accurate speed input.
  5. Verify the throttle actuator (cable or electronic) responds to cruise commands.
  6. Check for related brake or transmission codes that may disable cruise control.
  7. Clear codes and test cruise control on a safe road.

Note: These are general diagnostic guidelines. Some vehicles may have model-specific procedures. Always consult your vehicle's service manual for exact specifications and torque values. If you are not comfortable performing these steps, visit a qualified mechanic.

Frequently Asked Questions

Is P0595 serious?

The severity depends on the underlying cause. Some triggers for P0595 are minor (like a loose gas cap), while others may indicate a more significant problem. We recommend having the code diagnosed with a proper scan tool to determine the exact cause before deciding on urgency.

Can I clear P0595 myself?

You can clear any OBD-II code with a code scanner or by disconnecting the battery for 15-30 minutes. However, clearing the code without fixing the underlying problem will cause it to return, usually within one or two drive cycles. If the code triggered the check engine light, the light will come back on. Fix the root cause first, then clear the code.

How much does it cost to fix P0595?

Repair costs vary widely depending on the root cause. Some fixes are free (like tightening a gas cap) while others can cost several hundred dollars (like replacing a catalytic converter or oxygen sensor). A proper diagnosis with a professional scan tool, not just reading the code, is the first step to getting an accurate repair estimate. Many auto parts stores offer free code reading, but a thorough diagnosis usually requires a mechanic.

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