Engine-CodesBuick – P1585 Buick

P1585 Buick Code - Cruise Control Inhibit Output Circuit Conditions

Quick Answer

The P1585 Buick diagnostic trouble code (DTC) specifically refers to an issue with the Cruise Control Inhibit Output Circuit conditions in the vehicle's system. Common causes include Faulty cruise control switch, Wiring issues in the cruise control circuit, Defective cruise control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1585 Buick indicates Cruise Control Inhibit Output Circuit Conditions.
Common causes
Common causes include Faulty cruise control switch, Wiring issues in the cruise control circuit, Defective cruise control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1585 Buick Description

The P1585 Buick diagnostic trouble code (DTC) specifically refers to an issue with the Cruise Control Inhibit Output Circuit conditions in the vehicle's system. When this code is triggered, it means that the Engine Control Module (ECM) has detected a fault in the circuit responsible for controlling the cruise control system, resulting in the system being inhibited from functioning properly. This can lead to the cruise control system not engaging or disengaging unexpectedly while driving.

OBDII Code P1585 Buick - Cruise Control Inhibit Output Circuit Conditions
P1585 Buick Code - Cruise Control Inhibit Output Circuit Conditions

Common Causes of P1585 Buick

  1. Faulty cruise control switch
  2. Wiring issues in the cruise control circuit
  3. Defective cruise control module
  4. ECM malfunction affecting cruise control
  5. Poor electrical connections or corrosion in the circuit

Symptoms of P1585 Buick

  1. Inoperative cruise control system
  2. Cruise control engages but does not maintain set speed
  3. Cruise control disengages unexpectedly
  4. Dashboard warning light related to cruise control illuminates
  5. Vehicle speed fluctuates while cruise control is engaged

How to Fix P1585 Buick

  1. Diagnose the root cause of the issue by performing a thorough inspection of the cruise control system, including the switch, wiring, module, and ECM.
  2. Test the cruise control circuit for continuity and proper voltage levels to identify any faulty components.
  3. Replace any defective parts such as the cruise control switch, module, or ECM as needed.
  4. Repair or replace any damaged wiring or connectors in the cruise control circuit.
  5. Clear the DTC from the ECM memory and perform a test drive to ensure proper functionality of the cruise control system.

Cost to Fix P1585 Buick

The typical repair costs for addressing the P1585 Buick code related to Cruise Control Inhibit Output Circuit conditions can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. It is important to note that diagnosis time and labor rates can vary based on location, vehicle make and model, and the complexity of the repair. It is recommended to consult with a professional technician for a more precise estimate based on your individual circumstances.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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