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P1622 Buick Code - Cylinder Select

Quick Answer

The P1622 Buick code refers to an issue with the cylinder select function in the engine control module (ECM) of a Buick vehicle. Common causes include Faulty cylinder deactivation solenoids, Wiring issues or shorts, Malfunctioning ECM. 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
P1622 Buick indicates Cylinder Select.
Common causes
Common causes include Faulty cylinder deactivation solenoids, Wiring issues or shorts, Malfunctioning ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1622 Buick Description

The P1622 Buick code refers to an issue with the cylinder select function in the engine control module (ECM) of a Buick vehicle. This code typically indicates a problem with the system that controls which cylinders are active at any given time, usually related to variable displacement systems found in some modern engines.

OBDII Code P1622 Buick - Cylinder Select
P1622 Buick Code - Cylinder Select

Common Causes of P1622 Buick

  1. Faulty cylinder deactivation solenoids
  2. Wiring issues or shorts
  3. Malfunctioning ECM
  4. Low engine oil level or poor oil quality
  5. Mechanical issues with the engine, such as worn-out components

Symptoms of P1622 Buick

  1. Rough idle or running rough
  2. Hesitation or lack of power
  3. Engine misfires
  4. Reduced fuel economy
  5. Illuminated check engine light

How to Fix P1622 Buick

  1. Diagnose the issue using a scan tool to read the fault codes and pinpoint the problem area.
  2. Inspect the cylinder deactivation solenoids and related wiring for any signs of damage or corrosion.
  3. Test the ECM to ensure it is functioning properly and communicating with the cylinder select system.
  4. Replace any faulty components, such as solenoids or wiring harnesses, as needed.
  5. Clear the fault codes and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P1622 Buick

The cost of repairing a P1622 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 anywhere from $200 to $600 for parts and labor. Keep in mind that rates at auto repair shops can vary, so it's a good idea to get quotes from multiple shops to ensure you're getting a fair price. Additionally, factors such as the vehicle make and model, engine type, and location can also impact the overall repair costs.

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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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