AutoCodesChevrolet – P0659 2014 Chevrolet Silverado

P0659 2014 Chevrolet Silverado Code - Actuator High Control Circuit Group 1 High Voltage

Quick Answer

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted. 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 2014 Chevrolet Silverado indicates Actuator High Control Circuit Group 1 High Voltage.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted.
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 256
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 18, 2022
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Code P0659 2014 Chevrolet Silverado Description

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio, and torque converter clutch operation. The Transmission Control Solenoid Valves are electro-mechanically operated valves. The valves are controlled by an electric current through the solenoid. The TCM high side driver 1 is located inside of the control solenoid valve assembly which has no serviceable parts. The high side driver 1 provides power to the Transmission Control Module pressure control solenoids and shift solenoids. The Diagnostic Trouble Code (DTC) will be set when the TCM detects an internal short to voltage on the high side driver 1 circuit for 1 s after engine start.
OBDII Code P0659 2014 Chevrolet Silverado - Actuator High Control Circuit Group 1 High Voltage - AutoCodes.com
P0659 2014 Chevrolet Silverado Code - Actuator High Control Circuit Group 1 High Voltage

What are the Possible Causes of the DTC P0659 2014 Chevrolet Silverado?

  • Faulty Transmission Control Solenoid Valve
  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How to Fix the DTC P0659 2014 Chevrolet Silverado?

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 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P0659 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado Code

1. What does the OBDII code P0659 mean on a 2014 Chevrolet Silverado?

P0659 indicates an "Actuator High Control Circuit Group 1 High Voltage," meaning the Powertrain Control Module (PCM) has detected a higher-than-expected voltage in the control circuit for a specific actuator group.

2. What are the common symptoms of code P0659 on a 2014 Chevrolet Silverado?

Symptoms may include poor engine performance, reduced power, illuminated check engine light, or erratic operation of components controlled by the affected actuator.

3. What causes the P0659 code to appear on a 2014 Chevrolet Silverado?

This code can be caused by a short circuit in the actuator's wiring, a faulty actuator, a malfunctioning PCM, or corroded or damaged electrical connections.

4. How can I diagnose the P0659 code on my 2014 Chevrolet Silverado?

Start by inspecting the wiring and connectors for damage or corrosion, check the actuator for proper operation, and use a multimeter to test the circuit for voltage irregularities.

5. Can a bad actuator trigger the P0659 code on a 2014 Chevrolet Silverado?

Yes, a faulty actuator can cause high voltage in the control circuit, leading to the P0659 code.

6. How do I fix the P0659 code on a 2014 Chevrolet Silverado?

Repairs may include replacing or repairing damaged wiring, cleaning or securing electrical connections, replacing the faulty actuator, or reprogramming the PCM if needed.

7. Is it safe to drive my 2014 Chevrolet Silverado with the P0659 code?

It is not recommended. Driving with this code can lead to further engine or electrical damage and may cause performance issues.

8. How much does it cost to fix the P0659 code on a 2014 Chevrolet Silverado?

Repair costs vary depending on the issue but generally range from $100 to $500, depending on whether you need wiring repairs, actuator replacement, or PCM reprogramming.

9. Can I clear the P0659 code without fixing the problem?

While you can clear the code with an OBDII scanner, it will likely return unless the underlying issue causing the high voltage is resolved.

10. What tools do I need to troubleshoot the P0659 code on a 2014 Chevrolet Silverado?

You’ll need an OBDII scanner, a multimeter, and possibly a wiring diagram for your Silverado to diagnose the issue properly.

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