AutoCodes – Chevrolet – P2671 2015 Chevrolet Silverado

P2671 2015 Chevrolet Silverado Code - Actuator High Control Circuit Group 2 High Voltage

Quick Answer

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted. 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 2015 Chevrolet Silverado indicates Actuator High Control Circuit Group 2 High Voltage.
Common causes: Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted.
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 Popularity 252

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2671 2015 Chevrolet Silverado Description

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio, and torque converter clutch operation. The Transmission Control Solenoid Valves are electro-mechanically operated valves. The valves are controlled by an electric current through the solenoid. The TCM high side driver 2 is located inside of the control solenoid valve assembly which has no serviceable parts. The high side driver 2 provides power to the Transmission Control Module pressure control solenoids and shift solenoids. The Diagnostic Trouble Code (DTC) will be set when the TCM detects an internal short to voltage on the high side driver 2 circuit for 1 s after engine start.

OBDII Code P2671 2015 Chevrolet Silverado - Actuator High Control Circuit Group 2 High Voltage - AutoCodes.com — P2671 2015 Chevrolet Silverado Code - Actuator High Control Circuit Group 2 High Voltage

What does this mean?

What are the Possible Causes of the DTC P2671 2015 Chevrolet Silverado?

Faulty Transmission Control Solenoid Valve
Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P2671 2015 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2671 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2671 2015 Chevrolet Silverado code?

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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 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2671 on a 2015 Chevrolet Silverado?

- Common symptoms include rough idling, poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P2671 in a 2015 Chevrolet Silverado indicate?

- The code indicates a problem with the Actuator High Control Circuit Group 2 showing high voltage, typically related to the exhaust brake actuator system.

3. What are the possible causes of OBDII code P2671 on a 2015 Chevrolet Silverado?

- Possible causes include a faulty exhaust brake actuator, damaged wiring or connectors in the circuit, a malfunctioning ECM, or a software issue.

4. How can I diagnose the OBDII code P2671 on my 2015 Chevrolet Silverado?

- Diagnosis involves performing a visual inspection of the actuator, checking the wiring and connectors for damage, and using a diagnostic scan tool to analyze the circuit voltage readings.

5. Can I continue driving my 2015 Chevrolet Silverado with OBDII code P2671?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the exhaust brake system and potentially affect engine performance.

6. How can I reset the Check Engine Light after fixing OBDII code P2671 on my 2015 Chevrolet Silverado?

- You can reset the Check Engine Light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

7. Is it possible to repair OBDII code P2671 on a 2015 Chevrolet Silverado myself?

- While some simple repairs like checking for loose connections can be done by DIY enthusiasts, diagnosing and repairing complex issues related to this code may require professional assistance.

8. What are the repair options for fixing OBDII code P2671 on a 2015 Chevrolet Silverado?

- Repair options include replacing the exhaust brake actuator, repairing or replacing damaged wiring and connectors, reprogramming the ECM, or seeking help from a certified mechanic.

9. How much does it cost to fix OBDII code P2671 on a 2015 Chevrolet Silverado?

- The cost of fixing this code can vary depending on the specific issue causing it. Repairs may range from a few hundred to over a thousand dollars, including parts and labor.

10. How can I prevent OBDII code P2671 from recurring on my 2015 Chevrolet Silverado?

- Regularly inspecting and maintaining the exhaust brake system, ensuring proper wiring connections, and addressing any issues promptly can help prevent the recurrence of this code.