P0595 Cruise Control Servo Control Circuit Low

OBD2 Code: P0595

Description: Cruise Control Servo Control Circuit Low

Definition: This code indicates that there is a low voltage condition in the cruise control servo control circuit. The cruise control system uses this circuit to manage the speed of the vehicle by adjusting the throttle position. A low signal may suggest issues such as wiring problems, a faulty servo, or a malfunctioning cruise control module.

p0595 – Cruise Control Servo Control Circuit Low

Typical Severity: Moderate

Common Causes

P0595 – Cruise Control Servo Control Circuit Low

Common causes:

• Faulty cruise control servo
• Short circuit in the wiring harness
• Loose or corroded electrical connections related to the cruise control system
• Defective cruise control switch
• Issues with the powertrain control module (PCM)

 

Common Misdiagnosis

OBD2 Code: P0595

Description: Cruise Control Servo Control Circuit Low

Common Misdiagnosis: Replacing the cruise control servo without checking for wiring issues or a faulty cruise control switch.

 

Common Diagnostic Steps

OBD2 Code: P0595

Description: Cruise Control Servo Control Circuit Low

• Check the cruise control fuse and replace if blown.
• Inspect the wiring and connectors in the cruise control servo circuit for damage or corrosion.
• Test the voltage at the cruise control servo connector to ensure it is within specifications.
• Examine the cruise control switch for proper operation and continuity.
• Verify that the brake pedal position sensor is functioning correctly, as it may affect cruise control operation.
• If equipped, check for any related Technical Service Bulletins (TSBs) from the manufacturer.
• If all else fails, consider replacing the cruise control servo unit itself after confirming no other faults exist.