Faulty Mass Air Flow Sensor Causing Erratic Engine Operation and Poor Fuel Economy on Mercedes-Benz 500E

Problem overview

A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.

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Mercedes-Benz 500E vehicles with this problem

2 model years affected

1993 Mercedes-Benz 500E

1992 Mercedes-Benz 500E

1993 Mercedes-Benz 500E

1992 Mercedes-Benz 500E

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Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Faulty Mass Air Flow Sensor Causing Erratic Engine Operation and Poor Fuel Economy on Mercedes-Benz 500E

Problem overview

Mercedes-Benz 500E vehicles with this problem

Repairs related to this problem

Mass Airflow Sensor Replacement

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