AutoCodes – Mercury – P2686 Mercury

P2686 Mercury Code - Actuator Supply Voltage 'C' 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: P2686 Mercury indicates Actuator Supply Voltage 'C' 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 1,389

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
FAQs
Comments
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Code P2686 Mercury Description

OBDII Code P2686 Mercury - Actuator Supply Voltage 'C' Circuit High - AutoCodes.com — P2686 Mercury Code - Actuator Supply Voltage 'C' Circuit High

What does this mean?

What are the Possible Causes of the DTC P2686 Mercury?

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 P2686 Mercury?

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 P2686 Mercury 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 P2686 Mercury code?

Need more information on how to fix the P2686 Mercury code? Get Access to Factory Service Manuals

Need Help with the 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 P2686 Mercury Code

1. What are the common symptoms of OBDII code P2686 in a Mercury?

- Common symptoms include the Check Engine Light illuminating, engine performance issues, and potential stalling or rough idling.

2. What causes the Actuator Supply Voltage 'C' Circuit High code P2686 in a Mercury?

- This code is typically triggered by a malfunction in the actuator supply voltage circuit, which can be caused by wiring issues, a faulty actuator, or a problem with the powertrain control module (PCM).

3. How serious is the P2686 OBDII code in a Mercury?

- While the code itself may not directly cause serious harm to the vehicle, it can lead to poor engine performance and potential drivability issues if left unresolved.

4. Can I continue driving my Mercury with OBDII code P2686 present?

- It is not recommended to continue driving with this code present, as it can affect the performance and reliability of your vehicle.

5. How can I diagnose and repair OBDII code P2686 in my Mercury?

- Diagnosis typically involves checking the wiring and connections related to the actuator supply voltage circuit, testing the actuator itself, and inspecting the PCM for faults. Repair may involve repairing or replacing wiring, replacing the actuator, or reprogramming the PCM.

6. Will resetting the Check Engine Light resolve the P2686 code in my Mercury?

- Resetting the Check Engine Light may temporarily turn off the light, but it will not fix the underlying issue causing the P2686 code.

7. How much does it cost to fix OBDII code P2686 in a Mercury?

- The cost of repairs for this code can vary depending on the exact cause of the issue, but it may involve labor costs for diagnosis and repair, as well as the cost of any parts that need to be replaced.

8. Can a DIY enthusiast fix the Actuator Supply Voltage 'C' Circuit High code P2686 in a Mercury?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code themselves, but it is recommended to have a professional technician perform the necessary repairs for an accurate and lasting fix.

9. How long does it typically take to repair OBDII code P2686 in a Mercury?

- The repair time can vary depending on the exact cause of the issue and the complexity of the repair process, but it may take a few hours to a full day to diagnose and fix the problem.

10. Is OBDII code P2686 a common issue in Mercury vehicles?

- While not the most common code, P2686 can occur in Mercury vehicles, especially in older models or those with high mileage. Regular maintenance and inspections can help prevent this code from appearing.