P2671 OBD-II Trouble Code: Actuator Supply Voltage B Circuit High

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2671 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2671 code

P2671 is a diagnostic trouble code (DTC) for "Actuator Supply Voltage B Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P2671 DIAGNOSTIC Get a fair and transparent estimate upfront

check engine light

P2671 Trouble Code definition

A P2671 code indicates a fault in the B circuit’s actuator supply, detected by the PCM or another control module, such as:

  • body control module
  • alternative fuel control module
  • antilock brake control module
  • instrument panel control module
  • fuel injection control module
  • anti-theft module
  • cruise control module
  • traction control module
  • proximity alert module
  • climate control module

What a P2671 Code Means

An actuator supply voltage B malfunction means a trouble code has been stored and a Malfunction Indicator Lamp (MIL) or Check Engine Light may be illuminated. This code applies to all manufacturers. Sometimes, multiple drive cycles may be needed for the MIL to illuminate.

Causes of P2671 Code

A P2671 code is often caused by :

Symptoms of P2671 Code

Diagnosing a P2724 Code

The code is in reference to the actuator voltage signal from/to various engine control actuators(CAN). CAN is an abbreviation for ‘controller area network,” a communications bus between multiple microcomputers without a host computer being needed, a system designed specifically for automotive applications. The CAN bus is a network of wiring harnesses and connectors used to share information between automotive control modules, and controls practically every electronic function in the vehicle, along with the PCM.

  • A specialized scanner such as Autohex or Tech II may prove more useful in tracking down the specific malfunction than using a code reader and ohmmeter.

  • Use a memory saving device in case the PCM or other controllers lose memory and would require reprogramming

  • Specialized CAN scanners are available for diagnostics, showing pin values and control module operation and conditions. These scanners can give accurate real-time information while the vehicle is being operated.

  • Control module ground circuits will need to be tested for continuity with battery ground.

  • Check for any loose or dangling ground cables, straps or wires for the engine or transmission, from any recent repair work.

  • Look for corroded or loose electrical connectors that might cause a code to be stored due to increased circuit resistance. When you’ve narrowed it down, find a CAN bus system wiring diagram and use a volt ohmmeter to check continuity between connectors. Compare findings against manufacturer’s specs and repair open or shorted connections if needed.

Additional Considerations for P2671 Code

CAN systems are extremely complex, some with up to 18 separate control modules. All it can take is one misplaced probe to destroy expensive control modules and require a complete reprogramming of the vehicle. Due to the complexity of these systems, it’s advisable that repairs to correct a P2671 code be left to experienced, qualified techs with the proper tools for diagnosis and repair. Diagnosing and repairing a P2671 code with a digital volt-ohmmeter, for example, would require testing hundreds or thousands of individual circuits separately.

Need help with a P2671 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
P2671
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2671 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,936

Rating Summary
3,597
169
44
25
101
3,597
169
44
25
101

Francisco

7 years of experience
110 reviews
Francisco
7 years of experience
Francisco goes above and beyond his professional capabilities to assist you anyway he can. I would definitely highly recommend him to anyone using services for their car.
2004 LEXUS RX330 - CHECK ENGINE LIGHT IS ON - HUNTINGTON BEACH, CALIFORNIA

Daniel

18 years of experience
167 reviews
Daniel
18 years of experience
Daniel was very professional. Basically cleaned up the mess that the previous mechanic left
2008 TOYOTA CAMRY - CHECK ENGINE LIGHT IS ON - LEAGUE CITY, TEXAS

Jerel

8 years of experience
125 reviews
Jerel
8 years of experience
I was a little nervous about the whole thing at first but he was great! Got here 30 mins early, jumped right on it and figured out exactly what the problem was! I will definitely be using him again in the future.
2000 FORD FOCUS - CHECK ENGINE LIGHT IS ON - DURHAM, NORTH CAROLINA

Ira

33 years of experience
241 reviews
Ira
33 years of experience
EXCELLENT SERVICE! Highly recommended.
2006 KIA SEDONA - CHECK ENGINE LIGHT IS ON - TAMPA, FLORIDA

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...

Related questions

Q: Q: My car will not start

This could be a variety of things ranging from a fuel delivery problem to a no spark problem. The good thing is you know you are getting power to the starter if it cranks. Outside of this you will need...

Q: What can cause my oxygen sensor to get damaged during a oil change and fuel system cleaning?

Hi, thanks for writing in. The oil change would not damage an oxygen sensor. The fuel system cleaning could possibly cause this condition, but it depends on the cleaner type and mixture. I would recommend having an expert from YourMechanic...

Q: My car has the OBD-II codes P0030 and P0135 for the heater control circuit and sensor. Where is this sensor located?

This is a code that pertains to the heater side of your oxygen sensor. The heater is required to raise the temperature of the sensor so that it can operate properly. Simply unplugging relays/fuses will not keep the code from...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com