AutoCodes – Mercury – P0659 Mercury

P0659 Mercury Code - Actuator Supply Voltage 'A' 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: P0659 Mercury indicates Actuator Supply Voltage 'A' 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 1,212

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 May 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0659 Mercury Description

OBDII Code P0659 Mercury - Actuator Supply Voltage 'A' Circuit High - AutoCodes.com — P0659 Mercury Code - Actuator Supply Voltage 'A' Circuit High

What does this mean?

What are the Possible Causes of the DTC P0659 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 P0659 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 P0659 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 P0659 Mercury code?

Need more information on how to fix the P0659 Mercury code? Get Access to Factory Service Manuals

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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 P0659 Mercury Code

1. What are the common symptoms of OBDII code P0659 in a Mercury vehicle?

- Common symptoms include the illumination of the Check Engine Light, loss of power, and potential drivability issues.

2. What does the OBDII code P0659 for Actuator Supply Voltage 'A' Circuit High mean in a Mercury?

- This code indicates that the powertrain control module (PCM) has detected a high voltage condition in the actuator supply voltage 'A' circuit.

3. What are the possible causes of OBDII code P0659 in a Mercury?

- Possible causes include a faulty actuator, damaged wiring or connectors in the circuit, a malfunctioning PCM, or a short to power in the circuit.

4. How can I diagnose OBDII code P0659 in my Mercury?

- Diagnosing this code typically involves using a scan tool to retrieve the code, inspecting the actuator and related components, and testing the circuit for high voltage readings.

5. Can I continue driving my Mercury with OBDII code P0659 present?

- It is not recommended to drive your vehicle with this code as it can lead to further damage and potential safety issues. It's best to address the issue promptly.

6. How do I repair OBDII code P0659 in my Mercury?

- Repair options may include replacing the faulty actuator, repairing damaged wiring or connectors, resetting the PCM, or seeking professional help for further diagnostics.

7. Are there any DIY tips for fixing OBDII code P0659 in a Mercury?

- DIY tips may include checking and cleaning the wiring connections, ensuring proper grounding, and inspecting the actuator for any visible damage.

8. How much does it cost to fix OBDII code P0659 in a Mercury?

- The cost of repair can vary depending on the root cause of the issue, the parts needed for replacement, and whether you choose to do the repair yourself or seek professional help.

9. Can a bad battery cause OBDII code P0659 to trigger in a Mercury?

- A weak or failing battery could potentially cause voltage irregularities that may trigger the P0659 code. It's recommended to ensure your battery is in good condition.

10. Is OBDII code P0659 a common issue in Mercury vehicles?

- While not as common as some other codes, P0659 can still occur in Mercury vehicles, especially in older models or those with high mileage. Regular maintenance can help prevent such issues.