P0595 low

Cruise Control Servo Control Circuit Open

The P0595 code means the vehicle's onboard diagnostic system has detected: Cruise Control Servo Control Circuit Open. This is a low severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $50 - $400 (parts and labor)

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Common Symptoms

Check Engine Light on
Cruise servo does not respond
Cruise control system inoperative
No response from cruise control buttons

Probable Causes (Ranked by Likelihood)

Open circuit in cruise servo motor wiring Very High
Wiring damage or corrosion in the circuit High
Poor connector contact or backed-out pins Moderate
ECM or control module circuit failure Low

Step-by-Step Diagnostic Procedure

Use a scan tool to read Cruise Control Servo Control related data
Inspect all related wiring and connectors for damage, corrosion, or loose connections
Measure circuit voltage and resistance to identify opens, shorts, or high resistance
Command the affected component with a scan tool to verify it responds to ECM commands

Frequently Asked Questions

What does P0595 mean?

P0595 indicates a malfunction in the cruise control servo control circuit open. This prevents the cruise control system from operating correctly.

Can I still drive with this cruise control code?

Yes. Cruise control codes do not affect normal vehicle operation. The vehicle drives normally; only the cruise control convenience feature is affected.

Should I fix a cruise control code right away?

Cruise control codes are low priority for drivability and safety. However, the Check Engine Light may mask other more serious codes. Consider diagnosis when convenient.