AutoCodes – Chevrolet – P0966 2014 Chevrolet Silverado

P0966 2014 Chevrolet Silverado Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage

Quick Answer

The pressure control solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. Common causes include Low transmission fluid, Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly 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: P0966 2014 Chevrolet Silverado indicates Pressure Control Solenoid Valve 2 Control Circuit Low Voltage.
Common causes: Common causes include Low transmission fluid, Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly 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 1,267

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0966 2014 Chevrolet Silverado Description

The pressure control solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. The normally high-pressure control solenoid 2 regulates and directs the pressure control solenoid 2 oil pressure to the 3-5 reverse clutch regulator valve and 3-5 reverse clutch boost valve. Increasing pressure control solenoid 2 pressure increases pressure to the 3-5 reverse clutch. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 2 through a low side driver. Decreasing the current to the pressure control solenoid 2 increases pressure control solenoid 2 oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the pressure control solenoid 2 decreases pressure control solenoid 2 oil pressure by opening the solenoid exhaust port. Pressure control solenoid 2 power is supplied by the Transmission Control Module through a high side driver. The high-side driver protects the circuit and components from excessive current flow. If excessive current flow is detected, the high side driver will turn OFF. When the fault is corrected, the high-side driver will reset.
The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects a short to ground on the clutch pressure control solenoid 2 control circuit for 1 s.

OBDII Code P0966 2014 Chevrolet Silverado - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage - AutoCodes.com — P0966 2014 Chevrolet Silverado Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0966 2014 Chevrolet Silverado?

Low transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness is open or shorted
Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P0966 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 P0966 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 P0966 2014 Chevrolet Silverado 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 P0966 2014 Chevrolet Silverado Code

1. What does the OBDII code P0966 mean on a 2014 Chevrolet Silverado?

P0966 indicates a "Pressure Control Solenoid Valve 2 Control Circuit Low Voltage," meaning there is an issue with the electrical circuit controlling the transmission's pressure solenoid.

2. What are the symptoms of code P0966 in a 2014 Chevrolet Silverado?

Common symptoms include harsh or delayed shifting, transmission slipping, erratic gear changes, or the vehicle going into limp mode.

3. What causes the P0966 code to appear in a 2014 Chevrolet Silverado?

Causes may include a faulty pressure control solenoid, damaged wiring or connectors, low transmission fluid, or a malfunctioning powertrain control module (PCM).

4. Can a low transmission fluid level trigger the P0966 code?

Yes, low or contaminated transmission fluid can reduce hydraulic pressure and cause the solenoid to malfunction, potentially triggering the P0966 code.

5. How can I diagnose the P0966 code on my 2014 Chevrolet Silverado?

Start by checking the transmission fluid level and condition, inspect the wiring and connectors for damage, and test the solenoid and associated circuits using a multimeter.

6. Is it safe to drive a 2014 Chevrolet Silverado with a P0966 code?

Driving with a P0966 code is not recommended, as it can lead to further transmission damage or unsafe driving conditions due to erratic shifting.

7. How do I fix the P0966 code on a 2014 Chevrolet Silverado?

Repairs may involve replacing the faulty pressure control solenoid, repairing damaged wiring or connectors, or addressing low transmission fluid levels.

8. Can a bad PCM cause the P0966 code in a 2014 Chevrolet Silverado?

While less common, a malfunctioning PCM could cause the P0966 code if it fails to send proper signals to the solenoid.

9. How much does it cost to repair the P0966 code on a 2014 Chevrolet Silverado?

Repair costs can range from $150 to $500, depending on whether the issue is a simple wiring repair, solenoid replacement, or more extensive transmission work.

10. Will clearing the P0966 code fix the problem on a 2014 Chevrolet Silverado?

Clearing the code will not resolve the underlying issue; the problem must be properly diagnosed and repaired to prevent the code from returning.