AutoCodes – Mercedes-Benz – P0468 Mercedes-Benz

P0468 Mercedes-Benz Code - Purge Flow Sensor Circuit High Input

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: P0468 Mercedes-Benz indicates Purge Flow Sensor Circuit High Input.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,158

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0468 Mercedes-Benz Description

The Engine Control Module (ECM) monitors the Purge Flow Sensor performance. The ECM sets the OBDII code when the Purge Flow Sensor is not to factory specifications.

OBDII Code P0468 Mercedes-Benz - Purge Flow Sensor Circuit High Input - AutoCodes.com — P0468 Mercedes-Benz Code - Purge Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0468 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 P0468 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 P0468 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 P0468 Mercedes-Benz code?

Need more information on how to fix the P0468 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0468 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 P0468 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0468 in a Mercedes-Benz related to the Purge Flow Sensor Circuit High Input?

The common symptoms include rough idling, poor fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0468 in a Mercedes-Benz?

The code P0468 in a Mercedes-Benz is typically caused by a faulty purge flow sensor, issues with the wiring or connectors, or a problem with the engine control module.

3. How can I diagnose the OBDII code P0468 in my Mercedes-Benz?

Diagnosing code P0468 involves using an OBDII scanner to retrieve the code, checking the purge flow sensor and its circuit for any visible damage, and inspecting the wiring and connectors for any issues.

4. Can I drive my Mercedes-Benz with the OBDII code P0468 present?

While it is possible to drive with the code P0468, it is recommended to address the issue promptly to prevent potential damage to the vehicle and ensure optimal performance.

5. How can I repair OBDII code P0468 in my Mercedes-Benz?

Repairing code P0468 often involves replacing the faulty purge flow sensor, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.

6. Will resetting the check engine light resolve OBDII code P0468 in my Mercedes-Benz?

Simply resetting the check engine light will not fix the underlying issue causing code P0468. It is important to diagnose the problem, make necessary repairs, and then clear the code properly.

7. Are there any DIY tips for fixing OBDII code P0468 in a Mercedes-Benz?

While some basic troubleshooting steps can be taken, it is recommended to seek professional help to diagnose and repair OBDII code P0468 in a Mercedes-Benz to ensure the issue is properly resolved.

8. Can a Mercedes-Benz dealership or mechanic help with resolving OBDII code P0468?

Yes, Mercedes-Benz dealerships and experienced mechanics have the expertise and tools to diagnose and repair OBDII code P0468 efficiently and effectively.

9. How much does it typically cost to repair OBDII code P0468 in a Mercedes-Benz?

The cost of repairing code P0468 can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed.

10. Is it possible for OBDII code P0468 to reoccur after it has been repaired in a Mercedes-Benz?

If the underlying issue causing code P0468 is not properly addressed during the repair, there is a possibility for the code to reoccur. It is important to ensure that the root cause of the code is identified and fixed correctly.