The P0588 trouble code indicates that the cruise control vent control circuit is operating at a voltage higher than normal. The cruise control vent control circuit is responsible for managing vacuum to the cruise control servo, which adjusts the throttle to maintain a set speed.
Cruise Control Vent Control Circuit High
Code symptoms P0588.
1. Inoperative cruise control system.
2. Difficulty engaging or disengaging cruise control.
3. Cruise control functions not responding as expected.
4. Check Engine Light illuminated.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0588.
1. Faulty cruise control vent control solenoid.
2. High voltage in the cruise control vent control circuit due to a short circuit or excessive resistance.
3. Corroded or damaged terminals in the cruise control vent control circuit connectors.
4. Defective cruise control module.
Code Solutions P0588.
1. Inspect the cruise control vent control solenoid for proper operation and replace if necessary.
2. Check the voltage in the cruise control vent control circuit to determine if it is higher than normal. Repair any short circuits or excessive resistance as needed.
3. Thoroughly inspect the terminals in the cruise control vent control circuit connectors for corrosion or damage. Clean or replace any affected terminals.
4. If all other components check out, consider replacing the cruise control module.