AutoCodes – Chevrolet – P0966 2015 Chevrolet Silverado

P0966 2015 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 2015 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 268
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0966 2015 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 2015 Chevrolet Silverado - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage - AutoCodes.com
P0966 2015 Chevrolet Silverado Code - Pressure Control Solenoid Valve 2 Control Circuit Low Voltage

What are the Possible Causes of the DTC P0966 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P0966 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0966 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2015 Chevrolet Silverado Code

1. What does the OBDII code P0966 mean for a 2015 Chevrolet Silverado?

P0966 indicates a low voltage issue in the control circuit of Pressure Control Solenoid Valve 2, which is responsible for regulating transmission fluid pressure.

2. What are common symptoms of the P0966 code in a 2015 Chevrolet Silverado?

Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, and the illumination of the check engine light.

3. What causes the P0966 code to appear in a 2015 Chevrolet Silverado?

Common causes include a faulty pressure control solenoid, wiring issues such as damaged or corroded connections, or a malfunctioning transmission control module (TCM).

4. Can I continue driving my 2015 Chevrolet Silverado with the P0966 code?

While the truck may still be drivable, ignoring the issue could lead to further transmission damage and reduced performance. Prompt diagnosis and repair are recommended.

5. How do I diagnose the P0966 code on my 2015 Chevrolet Silverado?

Diagnose the code by checking the solenoid circuit wiring for damage, testing the pressure control solenoid for proper operation, and using a scan tool to monitor TCM data.

6. How do I fix the P0966 code on a 2015 Chevrolet Silverado?

Repairs may involve replacing the faulty pressure control solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the TCM if necessary.

7. How much does it cost to fix the P0966 code on a 2015 Chevrolet Silverado?

Repair costs vary depending on the cause but typically range from $200 to $500 for solenoid replacement and up to $1,000 if TCM replacement is required.

8. Can a dirty transmission fluid cause the P0966 code?

Yes, dirty or degraded transmission fluid can contribute to solenoid malfunctions, potentially triggering the P0966 code.

9. Is the P0966 code specific to the 2015 Chevrolet Silverado?

No, P0966 is a generic OBDII code, but its interpretation and repair may vary depending on the vehicle make and model.

10. Should I reset the P0966 code after repairs on my 2015 Chevrolet Silverado?

Yes, after completing repairs, clear the code using an OBDII scan tool and test drive the vehicle to ensure the issue is resolved.

Discuss the causes and fixes for P0966 2015 Chevrolet Silverado OBDII Code

Code P0966 2015 Chevrolet Silverado comments

No comments found for this page.

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