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 something is wrong with the part of the car that helps control the speed automatically, like when you set the car to keep going at the same speed on the highway.
The P0589 code indicates a problem with the electrical circuit related to the cruise control's multi-function input, specifically circuit B.
The cruise control system uses various inputs to maintain a set vehicle speed. The P0589 code is triggered when the Engine Control Module (ECM) detects an issue with the multi-function input B circuit, which could be due to a faulty switch, wiring problem, or a malfunctioning ECM.
• Cruise control not working
• Check Engine Light illuminated
• Inconsistent vehicle speed
• Faulty cruise control switch
• Damaged wiring or connectors
• Malfunctioning ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Inspect the cruise control switch for damage.
• Check wiring and connectors for continuity and damage.
• Test the ECM for proper function.
• Replace the faulty cruise control switch.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• Multimeter
• OBD-II scanner
• Screwdriver set
$100 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regularly inspect cruise control components.
• Ensure wiring is secure and free from damage.
• Avoid excessive force on cruise control switches.
Sensor Issue
• Avoid using cruise control until the issue is resolved.
• Consult a professional mechanic for diagnosis.
Check with your vehicle manufacturer; cruise control components may be covered under warranty.
This code has been reported in vehicles with cruise control systems that have been in use for several years.
Moderate – While not critical, it should be addressed to ensure proper cruise control function.
Operating a vehicle with malfunctioning cruise control can be unsafe. Ensure repairs are made promptly.
• Vehicle must be in motion.
• Cruise control system must be activated.
The cruise control switch is typically located on the steering wheel or steering column.
Q: Can I still drive my car with this code?
A: Yes, but the cruise control may not work properly.
Q: Will this code affect my car's performance?
A: It mainly affects the cruise control system, not overall performance.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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