P1622 GMC Code - Cylinder Select
Quick Answer
The P1622 GMC diagnostic trouble code relates to the Cylinder Select function within the vehicle's engine management system. Common causes include Faulty Cylinder Select solenoid, Wiring issues or shorts in the Cylinder Select circuit, Malfunctioning Cylinder Deactivation 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
- P1622 GMC indicates Cylinder Select.
- Common causes
- Common causes include Faulty Cylinder Select solenoid, Wiring issues or shorts in the Cylinder Select circuit, Malfunctioning Cylinder Deactivation 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.
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Code P1622 GMC Description
The P1622 GMC diagnostic trouble code relates to the Cylinder Select function within the vehicle's engine management system. This code typically indicates a fault in the system that controls which cylinders are firing in the engine, affecting the overall performance and efficiency of the vehicle. The Cylinder Select system is responsible for activating or deactivating specific cylinders to optimize fuel consumption, emissions, and power output based on driving conditions.
Common Causes of P1622 GMC
- Faulty Cylinder Select solenoid
- Wiring issues or shorts in the Cylinder Select circuit
- Malfunctioning Cylinder Deactivation module
- Engine control module (ECM) failure
- Poor quality or contaminated engine oil
Symptoms of P1622 GMC
- Reduced engine performance
- Decreased fuel efficiency
- Rough idling or engine vibrations
- Engine misfires
- Illuminated check engine light
How to Fix P1622 GMC
- Use a diagnostic scan tool to retrieve the trouble code and verify the Cylinder Select malfunction.
- Inspect the Cylinder Select solenoid, wiring harness, and connectors for any visible damage or corrosion.
- Test the Cylinder Deactivation module and ECM for proper function and communication.
- Replace any faulty components such as the solenoid, wiring, or control modules as needed.
- Clear the trouble code and perform a test drive to ensure the issue is resolved.
Cost to Fix P1622 GMC
The typical repair costs for addressing a P1622 GMC code can vary depending on the specific cause of the issue and the required repairs. Generally, the parts needed for this repair, such as a new Cylinder Select solenoid or ECM, can range from $100 to $500. Labor costs at auto repair shops typically fall between $80 and $150 per hour. Overall, the total repair cost for this issue could range from $200 to $800 or more, depending on the extent of the repairs needed. It's advisable to consult with a professional mechanic for a more accurate cost estimate based on your vehicle's make and model.
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