AutoCodes – Generic – P0466

P0466 Code - Purge Flow Sensor Circuit Range/Performance

Quick Answer

The Engine Control Module (ECM) monitors the Purge Flow Sensor performance. Common causes include Faulty Purge Flow Sensor, Purge Flow Sensor harness is open or shorted, Purge Flow Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0466 indicates Purge Flow Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Purge Flow Sensor, Purge Flow Sensor harness is open or shorted, Purge Flow Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 20,621

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 24, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0466 Description

The Engine Control Module (ECM) monitors the Purge Flow Sensor performance. The ECM sets the Diagnostic Trouble Code (DTC) when the Purge Flow Sensor is not to factory specifications.

OBDII Code P0466 - Purge Flow Sensor Circuit Range/Performance - AutoCodes.com — P0466 Code - Purge Flow Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0466?

Faulty Purge Flow Sensor
Purge Flow Sensor harness is open or shorted
Purge Flow Sensor circuit poor electrical connection

How to Fix the DTC P0466?

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 P0466 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 P0466 code?

Need more information on how to fix the P0466 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0466 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0466 Chevrolet — Purge Flow Sensor Circuit Range/Performance
P0466 GMC — Purge Flow Sensor Circuit Range/Performance
P0466 Mercedes-Benz — Purge Flow Sensor Circuit Range/Performance

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.