Engine-CodesBuick – P1581 Buick

P1581 Buick Code - Cruise Control Module Move Circuit High Input Conditions

Quick Answer

The P1581 Buick diagnostic trouble code indicates a problem with the Cruise Control Module Move Circuit High Input Conditions. Common causes include Faulty cruise control module, Corroded or damaged wiring connecting to the cruise control module, Malfunctioning vehicle speed sensor. 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
P1581 Buick indicates Cruise Control Module Move Circuit High Input Conditions.
Common causes
Common causes include Faulty cruise control module, Corroded or damaged wiring connecting to the cruise control module, Malfunctioning vehicle speed sensor.
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 P1581 Buick Description

The P1581 Buick diagnostic trouble code indicates a problem with the Cruise Control Module Move Circuit High Input Conditions. In simpler terms, this means that the electronic control module responsible for managing the vehicle's cruise control system is detecting a higher than normal input signal. This can lead to various issues with the cruise control system, affecting the vehicle's ability to maintain a set speed without manual input from the driver.

OBDII Code P1581 Buick - Cruise Control Module Move Circuit High Input Conditions
P1581 Buick Code - Cruise Control Module Move Circuit High Input Conditions

Common Causes of P1581 Buick

  1. Faulty cruise control module
  2. Corroded or damaged wiring connecting to the cruise control module
  3. Malfunctioning vehicle speed sensor
  4. Issues with the throttle position sensor
  5. Faulty brake light switch

Symptoms of P1581 Buick

  1. Inoperative cruise control system
  2. Cruise control system engaging and disengaging unexpectedly
  3. Check engine light illuminated on the dashboard
  4. Decreased fuel efficiency
  5. Vehicle speed fluctuations while cruise control is engaged

How to Fix P1581 Buick

  1. Diagnose the issue using a scan tool to retrieve the trouble code and identify the specific cause of the problem.
  2. Inspect the wiring harness connected to the cruise control module for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the vehicle speed sensor and throttle position sensor to ensure they are functioning correctly. Replace if faulty.
  4. Check the brake light switch for proper operation. Replace if needed.
  5. Clear the trouble code from the vehicle's computer and test the cruise control system to ensure proper operation.

Cost to Fix P1581 Buick

The cost of repairing the P1581 Buick code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor to address this problem. It's important to consult with a qualified mechanic to get an accurate estimate based on your vehicle's make and model, as well as the severity of the underlying issue. Remember that labor rates can fluctuate based on location and the type of repair shop you choose.

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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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