AutoCodes – Acura – P0971 Acura

P0971 Acura Code - Pressure Control Solenoid 'C' Control Circuit High

Quick Answer

The Continuously Variable Transmission (CVT) clutch pressure control solenoid valve controls and optimizes clutch pressure (hydraulic pressure) for various driving conditions. Common causes include Faulty CVT Clutch Pressure Control Solenoid Valve 'C', CVT Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted, CVT Clutch Pressure Control Solenoid Valve 'C' circuit poor electrical connection. 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 Acura indicates Pressure Control Solenoid 'C' Control Circuit High.
Common causes: Common causes include Faulty CVT Clutch Pressure Control Solenoid Valve 'C', CVT Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted, CVT Clutch Pressure Control Solenoid Valve 'C' circuit poor electrical connection.
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 2,655

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 Jan 30, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P0971 Acura Description

The Continuously Variable Transmission (CVT) clutch pressure control solenoid valve controls and optimizes clutch pressure (hydraulic pressure) for various driving conditions. The CVT clutch pressure control solenoid valve is controlled by duty cycle output. The spool in the CVT clutch pressure control solenoid valve moves the valve according to the current and produces hydraulic pressure in proportion to the current. The Powertrain Control Module (PCM) measures the current that passes through the CVT clutch pressure control solenoid valve and uses feedback control to compensate for the difference between the measured current and the commanded one. If the measured current is not equal to the duty cycle command, the PCM detects a malfunction (open, short to ground) and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0971 Acura - Pressure Control Solenoid 'C' Control Circuit High - AutoCodes.com — P0971 Acura Code - Pressure Control Solenoid 'C' Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P0971 Acura?

Faulty CVT Clutch Pressure Control Solenoid Valve 'C'
CVT Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted
CVT Clutch Pressure Control Solenoid Valve 'C' circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0971 Acura?

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 Acura 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.

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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.