AutoCodes – Land Rover – P0104 Land Rover

P0104 Land Rover Code - Mass or Volume Air Flow Circuit Intermittent

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks. 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 Land Rover indicates Mass or Volume Air Flow Circuit Intermittent.
Common causes: Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks.
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 7,534

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 19, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0104 Land Rover Description

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM). The ECM controls the temperature of the hot film by a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an MAF Sensor signal that is outside the calibrated level.

OBDII Code P0104 Land Rover - Mass or Volume Air Flow Circuit Intermittent - AutoCodes.com — P0104 Land Rover Code - Mass or Volume Air Flow Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0104 Land Rover?

Dirty Air Filter
Dirty Mass Air Flow (MAF) Sensor
Intake air leaks
Faulty Mass Air Flow Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P0104 Land Rover?

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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0104 Land Rover 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.

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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 Land Rover Code

1. What are the common symptoms of OBDII code P0104 in a Land Rover?

- Common symptoms include poor engine performance, rough idling, stalling, decreased fuel efficiency, and potential hesitation during acceleration.

2. What can cause the OBDII code P0104 to trigger in a Land Rover?

- The code P0104 is typically triggered by issues such as a faulty mass airflow sensor, damaged wiring or connectors in the airflow circuit, or a vacuum leak.

3. How can I diagnose the OBDII code P0104 in my Land Rover?

- You can diagnose the code P0104 by using an OBDII scanner to read the fault code, visually inspecting the mass airflow sensor and its connections, and conducting tests to check for voltage and resistance in the circuit.

4. Is it safe to drive my Land Rover with the OBDII code P0104 present?

- It is generally not recommended to drive your vehicle with the code P0104 present, as it can lead to further damage to the engine and decrease in performance.

5. Can I reset the OBDII code P0104 in my Land Rover without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the P0104 code to prevent further damage and ensure optimal vehicle performance.

6. How do I repair the OBDII code P0104 in my Land Rover?

- Repairing the code P0104 involves replacing the mass airflow sensor if faulty, repairing or replacing damaged wiring or connectors, and fixing any vacuum leaks in the air intake system.

7. Are there any DIY tips for fixing the OBDII code P0104 in a Land Rover?

- DIY tips include checking for loose connections, cleaning the mass airflow sensor with specialized cleaner, and ensuring the air filter is clean and free of debris.

8. Can a dirty air filter cause the OBDII code P0104 in a Land Rover?

- Yes, a dirty air filter can disrupt the airflow entering the engine, leading to incorrect readings by the mass airflow sensor and potentially triggering the P0104 code.

9. How long does it typically take to repair the OBDII code P0104 in a Land Rover?

- The repair time for the P0104 code can vary depending on the exact cause, but it usually takes around 1-2 hours for diagnosis and replacement of the faulty components.

10. Will the OBDII code P0104 cause my Land Rover to fail an emissions test?

- Yes, the code P0104 can cause your Land Rover to fail an emissions test due to the impact on fuel mixture and emissions control systems.