AutoCodes – Chevrolet – P0971 2018 Chevrolet Silverado

P0971 2018 Chevrolet Silverado Code - Pressure Control Solenoid Valve 3 Control Circuit High Voltage

Quick Answer

The pressure control solenoid 3 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: P0971 2018 Chevrolet Silverado indicates Pressure Control Solenoid Valve 3 Control Circuit High 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 374

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 P0971 2018 Chevrolet Silverado Description

The pressure control solenoid 3 is part of the control solenoid valve assembly which has no serviceable parts. The normally high-pressure control solenoid 3 regulates and directs the pressure control solenoid 3 oil pressure to the 4-5-6 clutch regulator valve and 4-5-6 clutch boost valve. Increasing pressure control solenoid 3 oil pressure increases oil pressure to the 4-5-6 clutch assembly. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 3 through a low side driver. Decreasing the current to the pressure control solenoid 3 increases pressure control solenoid 3 oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the pressure control solenoid 3 decreases pressure control solenoid 3 oil pressure by opening the solenoid exhaust port. Pressure control solenoid 3 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 an open or short to voltage on the pressure control solenoid 3 control circuit for 1 s.

OBDII Code P0971 2018 Chevrolet Silverado - Pressure Control Solenoid Valve 3 Control Circuit High Voltage - AutoCodes.com — P0971 2018 Chevrolet Silverado Code - Pressure Control Solenoid Valve 3 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0971 2018 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 P0971 2018 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 P0971 2018 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 P0971 2018 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 P0971 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0971 in a 2018 Chevrolet Silverado?

The common symptoms of code P0971 can include issues with shifting gears, transmission slipping, harsh shifting, and the transmission going into limp mode.

2. What does the OBDII code P0971 in a 2018 Chevrolet Silverado indicate?

OBDII code P0971 indicates a malfunction in the Pressure Control Solenoid Valve 3 Control Circuit, specifically high voltage being detected.

3. What are the possible causes of OBDII code P0971 in a 2018 Chevrolet Silverado?

Possible causes of code P0971 include a faulty pressure control solenoid valve, damaged wiring or connectors in the control circuit, low transmission fluid levels, or internal transmission issues.

4. How serious is OBDII code P0971 in a 2018 Chevrolet Silverado?

Code P0971 should be taken seriously as it can lead to transmission performance issues and potential damage if not addressed promptly.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P0971?

It is not recommended to continue driving your vehicle with code P0971 as it can cause further damage to the transmission. It's best to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose OBDII code P0971 in my 2018 Chevrolet Silverado?

Diagnosing code P0971 typically involves checking the pressure control solenoid valve, inspecting the wiring and connectors in the control circuit, and ensuring proper transmission fluid levels.

7. What are some repair tips for fixing OBDII code P0971 in a 2018 Chevrolet Silverado?

Repair tips may include replacing the pressure control solenoid valve, repairing any damaged wiring or connectors, checking and topping up transmission fluid, and clearing the code with a diagnostic tool.

8. Can I reset OBDII code P0971 in my 2018 Chevrolet Silverado by disconnecting the battery?

While disconnecting the battery may temporarily clear the code, it's important to address the underlying issue causing code P0971 to prevent it from reoccurring.

9. How much does it typically cost to repair OBDII code P0971 in a 2018 Chevrolet Silverado?

The cost of repairing code P0971 can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $200 to $600 or more.

10. Is it necessary to take my 2018 Chevrolet Silverado to a professional mechanic for OBDII code P0971 diagnosis and repair?

While some DIY enthusiasts may attempt to diagnose and repair code P0971, it is recommended to consult a professional mechanic with experience in transmission systems for accurate diagnosis and proper repair.