AutoCodes – Saturn – C0171 Saturn

C0171 Saturn Code - TCS Pilot Valve Circuit Malfunction

Quick Answer

The Master Cylinder Isolation Valve, or TCS Prime Valve Solenoid circuits are supplied with battery power when the ignition is in the RUN position. Common causes include Faulty TCS Pilot Valve Solenoid, TCS Pilot Valve Solenoid harness is open or shorted, TCS Pilot Valve Solenoid 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: C0171 Saturn indicates TCS Pilot Valve Circuit Malfunction.
Common causes: Common causes include Faulty TCS Pilot Valve Solenoid, TCS Pilot Valve Solenoid harness is open or shorted, TCS Pilot Valve Solenoid 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 1,162

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 May 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0171 Saturn Description

The Master Cylinder Isolation Valve, or TCS Prime Valve Solenoid circuits are supplied with battery power when the ignition is in the RUN position. The Electronic Brake Control Module (EBCM) controls the valve functions by grounding the circuit when necessary.

OBDII Code C0171 Saturn - TCS Pilot Valve Circuit Malfunction - AutoCodes.com — C0171 Saturn Code - TCS Pilot Valve Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC C0171 Saturn?

Faulty TCS Pilot Valve Solenoid
TCS Pilot Valve Solenoid harness is open or shorted
TCS Pilot Valve Solenoid circuit poor electrical connection

How to Fix the DTC C0171 Saturn?

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 C0171 Saturn 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 C0171 Saturn code?

Need more information on how to fix the C0171 Saturn 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 C0171 Saturn Code

What does the OBDII code C0171 indicate for a Saturn vehicle?

The OBDII code C0171 indicates a malfunction in the TCS (Traction Control System) pilot valve circuit, which can affect the vehicle's traction control functionality.

What are the common symptoms of a C0171 code?

Common symptoms include the traction control warning light illuminating on the dashboard, reduced traction control performance, and possible issues with the ABS system.

What can cause a C0171 code to trigger?

Possible causes include a faulty TCS pilot valve, damaged wiring or connectors in the circuit, a malfunctioning ABS module, or issues with the traction control system itself.

How can I diagnose a C0171 code?

To diagnose a C0171 code, use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the TCS pilot valve for proper operation.

What repairs are typically needed for a C0171 code?

Repairs may involve replacing the TCS pilot valve, repairing damaged wiring or connectors, or replacing the ABS module if it is found to be faulty.

Can I drive my Saturn with a C0171 code?

While you can drive the vehicle, it is not recommended as the traction control system may not function properly, which can affect driving safety, especially in slippery conditions.

Will clearing the C0171 code fix the problem?

Clearing the code may turn off the warning light temporarily, but the underlying issue must be repaired for the code to not return.

How much does it typically cost to repair a C0171 code?

Repair costs can vary widely depending on the specific issue, but it may range from $100 to $500 or more, depending on whether parts need to be replaced or if there are wiring repairs needed.

Are there any DIY steps I can take for a C0171 code?

You can check for visibly damaged wiring and connectors, clean any corrosion, and test the TCS pilot valve with a multimeter. However, more complex diagnostics may require a professional mechanic.