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Engine-Codes – GMC – P2671 2014 GMC Sierra

P2671 2014 GMC Sierra Code - Actuator High Control Circuit Group 2 High Voltage

Quick Answer

The P2671 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Actuator High Control Circuit Group 2 High Voltage. Common causes include Faulty actuator in group 2, Damaged wiring or connectors in the control circuit, Malfunctioning 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
P2671 2014 GMC Sierra indicates Actuator High Control Circuit Group 2 High Voltage.
Common causes
Common causes include Faulty actuator in group 2, Damaged wiring or connectors in the control circuit, Malfunctioning 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P2671 2014 GMC Sierra Description

The P2671 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Actuator High Control Circuit Group 2 High Voltage. This code indicates that there is a high voltage condition detected in the control circuit for actuator group 2. Actuators are components in the vehicle that are responsible for controlling various systems, such as the throttle, HVAC system, or transmission. In this case, the high voltage in the control circuit could be causing issues with the actuator's operation, potentially leading to performance problems in the vehicle.

OBDII Code P2671 2014 GMC Sierra - Actuator High Control Circuit Group 2 High Voltage
P2671 2014 GMC Sierra Code - Actuator High Control Circuit Group 2 High Voltage

Common Causes of P2671 2014 GMC Sierra

  1. Faulty actuator in group 2
  2. Damaged wiring or connectors in the control circuit
  3. Malfunctioning control module
  4. Corrosion or poor connections in the circuit
  5. Electrical issues such as a short circuit or voltage spikes

Symptoms of P2671 2014 GMC Sierra

  1. Engine hesitation or lack of response when accelerating
  2. Erratic behavior in the affected system (e.g., HVAC system)
  3. Illumination of the Check Engine Light
  4. Reduced fuel efficiency
  5. Rough idling or stalling

How to Fix P2671 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the actuator in group 2, checking for any signs of damage or malfunction.
  2. Inspect the wiring and connectors in the control circuit for any visible damage or corrosion. Repair or replace as necessary.
  3. Use a multimeter to test the voltage in the control circuit to identify the source of the high voltage condition.
  4. If the control module is suspected to be faulty, it may need to be replaced and reprogrammed.
  5. Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2671 2014 GMC Sierra

The typical repair costs for addressing the P2671 DTC on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new actuator, wiring harness, or control module can range from $200 to $800. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time depending on the complexity of the issue. Overall, the total repair cost for this issue could range from $300 to $1500, including parts and labor. It is advisable to consult with a qualified mechanic to obtain a more accurate estimate based on the specific circumstances of the vehicle.

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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.

Frequently Asked Questions about P2671 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2671 in a 2014 GMC Sierra?

The common symptoms of OBDII code P2671 in a 2014 GMC Sierra include reduced engine performance, rough idling, and potential issues with the transmission shifting smoothly.

2. What does the OBDII code P2671 "Actuator High Control Circuit Group 2 High Voltage" indicate in a 2014 GMC Sierra?

The OBDII code P2671 indicates that there is a high voltage condition detected in the actuator high control circuit group 2 in a 2014 GMC Sierra, potentially affecting the performance of the actuator.

3. What are the possible causes of OBDII code P2671 in a 2014 GMC Sierra?

Possible causes of OBDII code P2671 in a 2014 GMC Sierra include a faulty actuator, wiring issues in the control circuit, a malfunctioning sensor, or a problem with the engine control module.

4. How can I diagnose OBDII code P2671 in a 2014 GMC Sierra?

Diagnosing OBDII code P2671 in a 2014 GMC Sierra involves using an OBDII scanner to retrieve the code, inspecting the actuator and its control circuit for any visible damage, and testing the sensor and wiring for proper functionality.

5. Can I continue driving my 2014 GMC Sierra with OBDII code P2671 present?

It is not recommended to continue driving your 2014 GMC Sierra with OBDII code P2671 present, as it can lead to further damage to the actuator and other components, potentially resulting in more costly repairs.

6. How can OBDII code P2671 in a 2014 GMC Sierra be repaired?

Repairing OBDII code P2671 in a 2014 GMC Sierra may involve replacing the faulty actuator, repairing any damaged wiring or connectors in the control circuit, or reprogramming the engine control module to address the high voltage issue.

7. Is it safe to reset the OBDII code P2671 in a 2014 GMC Sierra with a diagnostic tool?

While resetting the OBDII code P2671 with a diagnostic tool may temporarily turn off the check engine light, it is important to diagnose and repair the underlying issue causing the code to prevent future problems.

8. Can a DIY enthusiast fix OBDII code P2671 in a 2014 GMC Sierra?

Depending on their experience and tools, a DIY enthusiast may be able to fix OBDII code P2671 in a 2014 GMC Sierra by following repair guides, but it is recommended to seek professional help for accurate diagnosis and repair.

9. How much does it cost to repair OBDII code P2671 in a 2014 GMC Sierra at a dealership?

The cost to repair OBDII code P2671 in a 2014 GMC Sierra at a dealership can vary depending on the exact cause of the issue, but it may involve parts replacement, labor charges, and diagnostic fees, potentially ranging from a few hundred to over a thousand dollars.

10. Will fixing OBDII code P2671 improve the performance and fuel efficiency of my 2014 GMC Sierra?

Fixing OBDII code P2671 in a 2014 GMC Sierra can improve the performance and fuel efficiency by resolving the underlying issue affecting the actuator and control circuit, allowing the engine to operate more efficiently and smoothly.

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