P0590 Cruise Control Multi Function Input B Circuit Stuck

OBD2 Code: P0590

Description: Cruise Control Multi Function Input B Circuit Stuck

Definition: This code indicates that there is a malfunction in the cruise control system, specifically related to the multi-function input B circuit. The circuit is stuck, meaning it is not responding or changing as expected when inputs are given.

P0590 – Cruise Control Multi Function Input B Circuit Stuck

Severity: Moderate

Common Causes

P0590 – Cruise Control Multi Function Input B Circuit Stuck

Common Causes:

• Faulty cruise control switch
• Short circuit in the wiring of the cruise control system
• Defective cruise control module
• Corroded or loose electrical connections related to the cruise control system

 

Common Misdiagnosis

OBD2 Code: P0590

Description: Cruise Control Multi-Function Input B Circuit Stuck

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

 

Common Diagnostic Steps

OBD2 Code: P0590

Description: Cruise Control Multi-Function Input B Circuit Stuck

Common Diagnostic Steps:

• Verify the code with an OBD2 scanner and clear it to see if it returns.
• Inspect the cruise control switch for physical damage or sticking buttons.
• Check the wiring and connectors related to the cruise control system for signs of wear, corrosion, or disconnection.
• Test the voltage and ground at the cruise control switch using a multimeter.
• Examine the fuse associated with the cruise control circuit and replace if necessary.
• Use a scan tool to monitor live data from the cruise control system to identify any irregularities in input signals.
• If applicable, check for any technical service bulletins (TSBs) related to this issue for your specific vehicle model.
• If all else fails, consider consulting a professional mechanic for further diagnosis and repair.