AutoCodes – Generic – P2671

P2671 Code - Actuator Supply Voltage 'B' Circuit High

Quick Answer

The Powertrain Control Module (PCM) monitors the transmission solenoid circuits by supplying voltage to the solenoids through this circuit, then checking for voltage returning from the solenoids through each of the individual solenoid control wires. Common causes include Faulty Transmission Solenoids, Transmission Solenoids harness is open or shorted, Transmission Solenoids circuit poor electrical connection. 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 indicates Actuator Supply Voltage 'B' Circuit High.
Common causes: Common causes include Faulty Transmission Solenoids, Transmission Solenoids harness is open or shorted, Transmission Solenoids circuit poor electrical connection.
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 16,209

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 Jan 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2671 Description

OBDII Code P2671 - Actuator Supply Voltage 'B' Circuit High - AutoCodes.com — P2671 Code - Actuator Supply Voltage 'B' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2671?

Faulty Transmission Solenoids
Transmission Solenoids harness is open or shorted
Transmission Solenoids circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2671?

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 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 code?

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Need Help with the Code?

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Information for Specific Makes

P2671 Buick — Actuator High Control Circuit Group 2 High Voltage
P2671 Cadillac — Actuator High Control Circuit Group 2 High Voltage
P2671 Chevrolet — Actuator High Control Circuit Group 2 High Voltage
P2671 Dodge — Actuator Supply Voltage 'B' Circuit High
P2671 Ford — Actuator Supply Voltage 'B' Circuit High
P2671 GMC — Actuator High Control Circuit Group 2 High Voltage
P2671 Lincoln — Actuator Supply Voltage 'B' Circuit High
P2671 Mercury — Actuator Supply Voltage 'B' Circuit High

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.