AutoCodes – Generic – P00BE

P00BE Code - Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low

Quick Answer

The Mass Airflow (MAF) Sensor uses a hot wire sensing element to measure the amount of air entering the engine. Common causes include Faulty Mass Airflow (MAF) 'B' Sensor, Mass Airflow 'B' Sensor harness is open or shorted, Mass Airflow 'B' Sensor circuit poor electrical connection. 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: P00BE indicates Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low.
Common causes: Common causes include Faulty Mass Airflow (MAF) 'B' Sensor, Mass Airflow 'B' Sensor harness is open or shorted, Mass Airflow 'B' Sensor circuit poor electrical connection.
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 9,600

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P00BE Description

The Mass Airflow (MAF) Sensor uses a hot wire sensing element to measure the amount of air entering the engine. The air passing over the hot wire causes it to cool. This hot wire is maintained at 200°C (392°F) above the ambient temperature as measured by a constant cold wire. The current required to maintain the temperature of the hot wire is proportional to the mass airflow. The MAF Sensor then outputs a signal to the Powertrain Control Module (PCM) proportional to the intake air mass. The PCM calculates the required fuel injector pulse width in order to provide the desired air to fuel ratio. The MAF sensor is located near the air cleaner assembly. Most MAF sensors have an integrated Intake Air Temperature (IAT) sensor. This Diagnostic Trouble Code (DTC) will be set when the Mass Airflow 'A' Sensor (MAF11) value is within the expected range for the current operating conditions, and the Mass Airflow 'B' Sensor (MAF21) value is less than the MAF11 value.

OBDII Code P00BE - Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low - AutoCodes.com — P00BE Code - Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low

What does this mean?

What are the Possible Causes of the DTC P00BE?

Faulty Mass Airflow (MAF) 'B' Sensor
Mass Airflow 'B' Sensor harness is open or shorted
Mass Airflow 'B' Sensor circuit poor electrical connection

How to Fix the DTC P00BE?

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 P00BE 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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Information for Specific Makes

P00BE BMW — Mass or Volume Air Flow 'B' Circuit Range/Performance - Air Flow Too Low
P00BE Ford — Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low
P00BE Lincoln — Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low
P00BE Mercury — Mass Airflow 'B' Circuit Range/Performance Air Flow Too Low

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.