Engine-Codes.com
Engine-Codes – Generic – P0659

P0659 Code - Actuator Supply Voltage 'A' Circuit High

Quick Answer

The P0659 diagnostic trouble code (DTC) refers to an issue with the Actuator Supply Voltage 'A' Circuit being too high. Common causes include Faulty Wiring: A damaged or corroded wiring harness can cause high voltage in the Actuator Supply Voltage 'A' Circuit, Malfunctioning Actuator: A defective actuator can draw excessive voltage, leading to circuit high issues, Powertrain Control Module (PCM) Failure: A malfunctioning PCM can send incorrect voltage signals to the actuator, causing high voltage. 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 indicates Actuator Supply Voltage 'A' Circuit High.
Common causes
Common causes include Faulty Wiring: A damaged or corroded wiring harness can cause high voltage in the Actuator Supply Voltage 'A' Circuit, Malfunctioning Actuator: A defective actuator can draw excessive voltage, leading to circuit high issues, Powertrain Control Module (PCM) Failure: A malfunctioning PCM can send incorrect voltage signals to the actuator, causing high voltage.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0659 Description

The P0659 diagnostic trouble code (DTC) refers to an issue with the Actuator Supply Voltage 'A' Circuit being too high. This code indicates that there is a problem with the voltage supply to a particular actuator in the vehicle, which could lead to performance issues and potential long-term damage if not addressed promptly.

OBDII Code P0659 - Actuator Supply Voltage 'A' Circuit High
P0659 Code - Actuator Supply Voltage 'A' Circuit High

Common Causes of P0659

  1. Faulty Wiring: A damaged or corroded wiring harness can cause high voltage in the Actuator Supply Voltage 'A' Circuit.
  2. Malfunctioning Actuator: A defective actuator can draw excessive voltage, leading to circuit high issues.
  3. Powertrain Control Module (PCM) Failure: A malfunctioning PCM can send incorrect voltage signals to the actuator, causing high voltage.
  4. Voltage Regulator Problem: An issue with the vehicle's voltage regulator can result in an overcharge and high voltage in the circuit.

Symptoms of P0659

  1. Check Engine Light: The most common symptom associated with the P0659 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in engine performance, such as hesitation, rough idling, or lack of power.
  3. Poor Fuel Efficiency: High voltage to the actuator can lead to inefficient fuel combustion, resulting in decreased fuel efficiency.
  4. Transmission Issues: The transmission may shift erratically or exhibit unusual behavior due to the disrupted actuator voltage supply.

How to Fix P0659

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the fault code and pinpoint the exact cause of the high voltage in the Actuator Supply Voltage 'A' Circuit.
  2. Inspect Wiring: Check the wiring harness for any damage, corrosion, or loose connections. Repair or replace any faulty wiring as needed.
  3. Test Actuator: Verify the functionality of the actuator by testing its voltage requirements and operation. Replace the actuator if it is found to be malfunctioning.
  4. Check PCM: Inspect the PCM for any signs of damage or malfunction. If necessary, reprogram or replace the PCM to correct the voltage supply issue.
  5. Verify Voltage Regulator: Test the vehicle's voltage regulator to ensure it is functioning correctly. Replace the regulator if it is causing high voltage in the circuit.

Cost to Fix P0659

The cost of repairing the Actuator Supply Voltage 'A' Circuit high issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle type, and the extent of the repair needed can also impact the final cost. It is recommended to obtain quotes from multiple repair shops to get a more accurate estimate for this repair.

Need more information about the P0659 code?

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

Need Help with the Code?

Get the P0659 code diagnosed by a professional: Find a repair shop in your area

Code P0659 Information for Specific Makes

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 Code

1. What does the OBDII code P0659 mean?

P0659 indicates that the actuator supply voltage 'A' circuit is registering a voltage level higher than expected, which may affect various actuators in the vehicle.

2. What are the common symptoms of code P0659?

Common symptoms include reduced engine performance, erratic behavior of actuators, warning lights on the dashboard, and potential limp mode activation.

3. What causes code P0659?

Possible causes include a short circuit, damaged wiring, failed actuator control module, or a faulty actuator.

4. Can I drive my car with code P0659?

Driving with P0659 is not recommended, as it may lead to further damage or unpredictable performance issues.

5. How do I diagnose code P0659?

Diagnosis involves checking wiring and connections for damage, testing the actuator control module, and inspecting the affected actuator for faults.

6. How do I fix code P0659?

Repairs may include replacing damaged wiring, repairing electrical connections, or replacing the faulty actuator or control module.

7. Will clearing the code fix P0659?

Clearing the code won't fix the underlying issue; you need to address the root cause to prevent the code from returning.

8. How much does it cost to fix code P0659?

Repair costs vary depending on the cause but can range from $100 for simple wiring fixes to several hundred dollars if a module or actuator replacement is needed.

9. Can a bad battery cause code P0659?

A weak or failing battery can contribute to voltage-related issues, but it’s not a primary cause of P0659.

10. What tools do I need to diagnose code P0659?

You’ll need an OBDII scanner, a multimeter for voltage testing, and access to the vehicle’s wiring diagrams.

Discuss the causes and fixes for P0659 OBDII Code

Submit a New Comment

Code P0659 comments

No comments found for this page.