P0590 Fault Code
P0590 OBD-II Trouble Code Short Description
Cruise Control Multi-Function Input B Circuit Stuck
What does trouble code P0590 mean?
The P0590 code indicates that there is an issue with the Cruise Control Multi-Function Input B circuit which has become stuck. This can prevent the cruise control system from functioning correctly, leading to potential safety hazards and driving inconvenience. The vehicle's Engine Control Module (ECM) registers this fault and triggers the check engine light.
Symptoms
What are the symptoms of the P0590 code?
- Cruise control not engaging or disengaging properly
- Inability to accelerate using cruise control
- Check engine light illuminated on the dashboard
- Unusual behavior when attempting to operate cruise control functions
Causes
What causes the P0590 code?
- Faulty cruise control switch
- Wiring issues or shorts in the circuit
- Poor connections within the cruise control wiring
- ECM issues affecting signal processing
- Mechanical failures within the cruise control system
Possible Solutions
How to fix P0590?
- Inspect and diagnose the cruise control switch for proper operation
- Check wiring harness for damage, corrosion, or loose connections
- Repair or replace faulty components within the cruise control system
- Reset the ECM after repairs to clear the fault code
- Conduct a thorough test drive to ensure proper functionality