AutoCodes – Mercedes-Benz – P0466 Mercedes-Benz

P0466 Mercedes-Benz 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 Mercedes-Benz 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 5,416

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 Oct 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0466 Mercedes-Benz 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 Mercedes-Benz - Purge Flow Sensor Circuit Range/Performance - AutoCodes.com — P0466 Mercedes-Benz Code - Purge Flow Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0466 Mercedes-Benz?

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 Mercedes-Benz?

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 Mercedes-Benz 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 Mercedes-Benz code?

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

Need Help with the Code?

Get the P0466 Mercedes-Benz 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 P0466 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0466 in a Mercedes-Benz?

- Common symptoms include rough idling, stalling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What does the P0466 code indicate in a Mercedes-Benz?

- The P0466 code indicates an issue with the Purge Flow Sensor Circuit Range/Performance in the vehicle's evaporative emission control system.

3. What are the possible causes of the P0466 code in a Mercedes-Benz?

- Possible causes include a faulty purge flow sensor, damaged wiring or connectors in the purge flow sensor circuit, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose the P0466 code in my Mercedes-Benz?

- Diagnosing the P0466 code typically involves using an OBDII scanner to retrieve the code, inspecting the purge flow sensor and its circuit for any visible damage, and testing the sensor's functionality.

5. Can I still drive my Mercedes-Benz with the P0466 code present?

- It is not recommended to drive your vehicle with the P0466 code present, as it can lead to further damage and potential safety issues. It is best to address the issue promptly.

6. How can I repair the P0466 code in my Mercedes-Benz?

- Repairing the P0466 code may involve replacing the purge flow sensor, repairing any damaged wiring or connectors, or reprogramming the PCM. It is advisable to consult a professional mechanic for proper diagnosis and repair.

7. Are there any DIY tips for fixing the P0466 code in a Mercedes-Benz?

- DIY tips for fixing the P0466 code include checking the purge flow sensor and its connections for any visible issues, ensuring proper wiring connections, and clearing the code with an OBDII scanner to see if it returns.

8. Will the P0466 code cause my Mercedes-Benz to fail an emissions test?

- Yes, the P0466 code is related to the evaporative emission control system, and if left unresolved, it can cause your Mercedes-Benz to fail an emissions test.

9. How much does it cost to repair the P0466 code in a Mercedes-Benz?

- The cost of repairing the P0466 code can vary depending on the extent of the issue, parts needed, and labor costs. It is recommended to obtain quotes from different repair shops for an accurate estimate.

10. Can I prevent the P0466 code from recurring in my Mercedes-Benz?

- To prevent the P0466 code from recurring, it is essential to perform regular maintenance on your vehicle, including checking the evaporative emission control system components for any signs of wear or damage.