Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in the car found a problem with the cruise control system. It's like when a remote control doesn't work because the batteries are too strong.
The P0596 code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the cruise control servo control circuit.
The cruise control system uses a servo to maintain vehicle speed. The ECM monitors the voltage in the servo control circuit. If the voltage is higher than expected, the ECM sets the P0596 code. This could be due to a short circuit, a faulty servo, or an issue with the wiring or connectors.
• Cruise control not working
• Check Engine Light on
• Intermittent cruise control operation
• Faulty cruise control servo
• Short circuit in the wiring
• Bad connectors or corrosion in the circuit
ECM: Engine Control Module, the computer that manages engine functions.
Servo: A device used to control the cruise control system by adjusting the throttle.
• Use an OBD-II scanner to confirm the P0596 code.
• Inspect the cruise control servo and wiring for damage or corrosion.
• Test the voltage in the servo control circuit.
• Replace the faulty cruise control servo.
• Repair or replace damaged wiring or connectors.
• Clear the code and test the system.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Chevrolet Malibu
• Ford Focus
• Toyota Camry
• Regularly inspect and maintain the cruise control system.
• Check for corrosion or damage in electrical connections.
• Avoid exposure to moisture in electrical components.
Sensor Issue
• Do not use cruise control until the issue is resolved.
• Consult a professional mechanic if unsure about repairs.
Check your vehicle's warranty for coverage on electrical components.
The P0596 code has been reported in various models, mostly due to electrical issues in the cruise control system.
Moderate – While the vehicle is still drivable, the cruise control system will not function properly.
It is important to address this issue to ensure the cruise control functions safely and reliably.
• Vehicle must be in a safe, stationary position.
• Ensure the ignition is in the 'on' position without starting the engine.
The cruise control servo is typically located near the throttle body or integrated into the throttle actuator assembly.
Q: Can I drive my car with a P0596 code?
A: Yes, but the cruise control will not work. It's best to fix the issue soon.
Q: Will the P0596 code clear itself?
A: The code may clear if the issue is resolved, but it's best to manually clear it with an OBD-II scanner.
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