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P0104 Mercedes-Benz Code - Mass or Volume Air Flow Circuit Intermittent

Quick Answer

The P0104 code for Mercedes-Benz vehicles indicates a problem with the Mass or Volume Air Flow Circuit being intermittent. Common causes include Dirty or faulty MAF sensor, Vacuum leak in the intake system, Clogged air filter. 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
P0104 Mercedes-Benz indicates Mass or Volume Air Flow Circuit Intermittent.
Common causes
Common causes include Dirty or faulty MAF sensor, Vacuum leak in the intake system, Clogged air filter.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0104 Mercedes-Benz Description

The P0104 code for Mercedes-Benz vehicles indicates a problem with the Mass or Volume Air Flow Circuit being intermittent. The Mass Air Flow (MAF) sensor is a crucial component of the vehicle's engine management system, as it measures the amount of air entering the engine to determine the correct air-fuel mixture. This information is essential for the engine to run smoothly and efficiently.

OBDII Code P0104 Mercedes-Benz - Mass or Volume Air Flow Circuit Intermittent
P0104 Mercedes-Benz Code - Mass or Volume Air Flow Circuit Intermittent

Common Causes of P0104 Mercedes-Benz

  1. Dirty or faulty MAF sensor
  2. Vacuum leak in the intake system
  3. Clogged air filter
  4. Issues with wiring or connectors related to the MAF sensor

Symptoms of P0104 Mercedes-Benz

  1. Rough idling or stalling
  2. Reduced fuel efficiency
  3. Hesitation during acceleration
  4. Lack of power or response when driving

How to Fix P0104 Mercedes-Benz

  1. Begin by inspecting the MAF sensor for any dirt or debris. Clean the sensor using MAF sensor cleaner if necessary.
  2. Check for any vacuum leaks in the intake system and repair or replace any damaged hoses.
  3. Inspect the air filter and replace it if it is dirty or clogged.
  4. Check the wiring and connectors related to the MAF sensor for any damage or corrosion. Repair or replace as needed.
  5. Clear the diagnostic trouble codes using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0104 Mercedes-Benz

The cost of repairing a P0104 code on a Mercedes-Benz vehicle can vary depending on the specific cause of the issue. In general, the cost of replacing a MAF sensor can range from $100 to $400, including parts and labor. Additional costs may apply if there are other components that need to be replaced or repaired. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to shop around for the best price.

What does this mean?

Tech Notes for P0104 Mercedes-Benz

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.





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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 P0104 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0104 in a Mercedes-Benz?

- Common symptoms include reduced engine power, rough idling, stalling, poor fuel efficiency, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P0104 in a Mercedes-Benz?

- The code P0104 indicates a problem with the Mass or Volume Air Flow Circuit Intermittent, which could be caused by a faulty MAF sensor, damaged wiring, or a poor connection.

3. How can I diagnose the cause of OBDII code P0104 in my Mercedes-Benz?

- To diagnose the issue, you can start by inspecting the MAF sensor and its wiring for any visible damage. You can also use a multimeter to test the sensor's voltage and resistance values.

4. Can a dirty air filter trigger OBDII code P0104 in a Mercedes-Benz?

- Yes, a dirty or clogged air filter can disrupt the airflow to the MAF sensor, leading to erroneous readings and potentially triggering the P0104 code.

5. Is it safe to continue driving my Mercedes-Benz with OBDII code P0104 present?

- It is not recommended to drive the vehicle with the P0104 code present, as it can lead to engine performance issues and potential damage if left unresolved.

6. How can I reset OBDII code P0104 in my Mercedes-Benz?

- Resetting the code can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. Can a DIY enthusiast repair OBDII code P0104 in a Mercedes-Benz?

- Depending on the exact cause, DIY repairs for P0104 may be possible, such as cleaning the MAF sensor or repairing damaged wiring. However, complex issues may require professional diagnosis and repair.

8. Will driving in extreme weather conditions affect OBDII code P0104 in a Mercedes-Benz?

- Extreme weather conditions can potentially exacerbate issues related to the MAF sensor, such as condensation or temperature fluctuations, leading to intermittent problems and triggering the P0104 code.

9. How much does it typically cost to repair OBDII code P0104 in a Mercedes-Benz?

- Repair costs for P0104 can vary depending on the exact cause of the issue. It is advisable to obtain a diagnostic from a qualified mechanic to determine the specific repairs needed and associated costs.

10. Can a bad O2 sensor cause OBDII code P0104 to appear in a Mercedes-Benz?

- While a faulty O2 sensor can impact fuel mixture and emissions, it is not directly related to triggering the P0104 code, which specifically pertains to issues with the MAF sensor circuit.

Discuss the causes and fixes for P0104 Mercedes-Benz OBDII Code

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  • My Mercedes Benz 2003 c240,replacing the MAF SENSOR,,IT WILL BE ABLE TO GET BETTER, cause, it does show p0104 code,,I check for any leaks, and pipes and nothing,,can anybody help me

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  • On E500 Replaced the Air Pump, Air Flow Sensor, and Egr Valve P0104 Code comes up again for the 4th Time and this time the car stalled. Been getting late reaction of acceleration when i push down on the gas pedal. What’s next to fix it ?

    Reply to Comment